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Jun 29, 2018
06/18

Jun 29, 2018
by
Mark W. Coffey

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The Stieltjes constants $\gamma_k(a)$ appear as the coefficients in the regular part of the Laurent expansion of the Hurwitz zeta function $\zeta(s,a)$ about $s=1$. We generalize the integral and Stirling number series results of [4] for $\gamma_k(a=1)$. Along the way, we point out another recent asymptotic development for $\gamma_k(a)$ which provides convenient and accurate results for even modest values of $k$.

Topics: Complex Variables, Number Theory, Mathematics

Source: http://arxiv.org/abs/1602.03387

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6.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Milan M. Cirkovic

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We review the history and status of the famous classification of extraterrestrial civilizations given by the great Russian astrophysicist Nikolai Semenovich Kardashev, roughly half a century after it has been proposed. While Kardashev's classification (or Kardashev's scale) has often been seen as oversimplified, and multiple improvements, refinements, and alternatives to it have been suggested, it is still one of the major tools for serious theoretical investigation of SETI issues. During these...

Topics: Earth and Planetary Astrophysics, Popular Physics, Astrophysics, History and Philosophy of Physics,...

Source: http://arxiv.org/abs/1601.05112

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6.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Daniel Uribe

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The method for analyzing algorithmic runtime complexity using decision trees is discussed using the sorting algorithm. This method is then extended to optimal algorithms which may find all cliques of size q in network N, or simply the first clique of size q in network N. Finally, the lower bound of such decision trees is demonstrated to not be in P.

Topics: Computational Complexity, Computing Research Repository

Source: http://arxiv.org/abs/1601.03619

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Jun 29, 2018
06/18

Jun 29, 2018
by
Piyali Bhar; Tuhina Manna; Farook Rahaman; Saibal Ray; and G. S. Khadekar

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Present paper provides a new model for perfect fluid sphere filled with charge in higher dimensional spacetime admitting conformal symmetry. We consider a linear equation of state with coefficients fixed by the matching conditions at the boundary of the source corresponding to the exterior Reissner-Nordstr\"{o}m higher dimensional spacetime. Several physical features for different dimensions, starting from four up to eleven, are briefly discussed. It is shown that all the features as...

Topics: General Physics, Physics

Source: http://arxiv.org/abs/1601.02647

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Jun 29, 2018
06/18

Jun 29, 2018
by
Aftab Alam; Mohammad Imdad; Stojan Radenovic

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In this paper, we introduce a generalized notion of monotone property and prove some results regarding existence and uniqueness of multi-tupled fixed points for nonlinear contraction mappings satisfying monotone property in ordered complete metric spaces. Our results unify several classical and well known n-tupled (including coupled, tripled and quadruple ones) fixed point results existing in literature.

Topics: Functional Analysis, Mathematics

Source: http://arxiv.org/abs/1601.02512

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Jun 29, 2018
06/18

Jun 29, 2018
by
Jun Sato; Katsuhiro Nishinari

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We consider the asymmetric simple exclusion process with Langmuir kinetics on a periodic lattice. We analytically obtain the exact time evolution of correlation functions with arbitrary length starting from the initial state with no particle in the system. The exact stationary state of this model has been known for the totally asymmetric case. We propose a basis transformation which simplifies the proof of the stationarity of this state and enables the generalization to the partially asymmetric...

Topics: Exactly Solvable and Integrable Systems, Nonlinear Sciences, Statistical Mechanics, Condensed...

Source: http://arxiv.org/abs/1601.02651

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Jun 29, 2018
06/18

Jun 29, 2018
by
Aftab Alam; Mohammad Imdad; Javid Ali

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In the present article, we introduce a unified notion of multi-tupled fixed points and utilize the same to prove some existence and uniqueness unified multi-tupled fixed point theorems for Boyd-Wong type nonlinear contractions satisfying generalized mixed monotone property in ordered metric spaces. Our results unify several classical and well-known n-tupled (including coupled, tripled and quadrupled ones) fixed point results existing in the literature.

Topics: Functional Analysis, Mathematics

Source: http://arxiv.org/abs/1601.02509

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Jun 29, 2018
06/18

Jun 29, 2018
by
Markus Rein; Nike Heinß; Friederike Schmid; Thomas Speck

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We study a generic model for quorum-sensing bacteria in circular confinement. Every bacterium produces signaling molecules, the local concentration of which triggers a response when a certain threshold is reached. If this response lowers the motility then an aggregation of bacteria occurs, which differs fundamentally from standard motility-induced phase separation due to the long-ranged nature of the concentration of signal molecules. We analyze this phenomenon analytically and by numerical...

Topics: Soft Condensed Matter, Statistical Mechanics, Condensed Matter, Cell Behavior, Physics, Biological...

Source: http://arxiv.org/abs/1601.01512

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Jun 29, 2018
06/18

Jun 29, 2018
by
Anffany Chen; M. Franz

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We study the proximity effect between an s-wave superconductor (SC) and the surface states of a Weyl semimetal. An interesting two-dimensional SC forms in such an interface with properties resembling in certain aspects the Fu-Kane superconductor with some notable differences. In a Weyl semimetal with unbroken time reversal symmetry the interface SC supports completely flat Majorana bands in a linear Josephson junction with a {\pi} phase difference. We discuss stability of these bands against...

Topics: Mesoscale and Nanoscale Physics, Superconductivity, Condensed Matter, Strongly Correlated Electrons

Source: http://arxiv.org/abs/1601.01727

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Jun 29, 2018
06/18

Jun 29, 2018
by
Stefan Meingast; João Alves; Diego Mardones; Paula Teixeira; Marco Lombardi; Josefa Großschedl; Joana Ascenso; Herve Bouy; Jan Forbrich; Alyssa Goodman; Alvaro Hacar; Birgit Hasenberger; Jouni Kainulainen; Karolina Kubiak; Charles Lada; Elizabeth Lada; André Moitinho; Monika Petr-Gotzens; Lara Rodrigues; Carlos G. Román-Zúñiga

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Orion A hosts the nearest massive star factory, thus offering a unique opportunity to resolve the processes connected with the formation of both low- and high-mass stars. Here we present the most detailed and sensitive near-infrared (NIR) observations of the entire molecular cloud to date. With the unique combination of high image quality, survey coverage, and sensitivity, our NIR survey of Orion A aims at establishing a solid empirical foundation for further studies of this important cloud. In...

Topics: Astrophysics, Solar and Stellar Astrophysics, Astrophysics of Galaxies

Source: http://arxiv.org/abs/1601.01687

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Jun 29, 2018
06/18

Jun 29, 2018
by
S. K. Adhikari

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We demonstrate robust, stable, mobile two-dimensional (2D) dipolar ring-dark-in-bright (RDB) Bose-Einstein condensate (BEC) solitons for repulsive contact interaction, subject to a harmonic trap along the $y$ direction perpendicular to the polarization direction $z$. Such a RDB soliton has a ring-shaped notch (zero in density) imprinted on a 2D bright soliton free to move in the $x-z$ plane. At medium velocity the head-on collision of two such solitons is found to be quasi elastic with...

Topics: Pattern Formation and Solitons, Nonlinear Sciences, Condensed Matter, Quantum Gases

Source: http://arxiv.org/abs/1601.01519

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Jun 29, 2018
06/18

Jun 29, 2018
by
N. Degenaar; K. I. I. Koljonen; D. Chakrabarty; E. Kara; D. Altamirano; J. M. Miller; A. C. Fabian

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Observational evidence has been accumulating that thermonuclear X-ray bursts ignited on the surface of neutron stars influence the surrounding accretion flow. Here, we exploit the excellent sensitivity of NuSTAR up to 79 keV to analyze the impact of an X-ray burst on the accretion emission of the neutron star LMXB 4U 1608-52. The ~200 s long X-ray burst occurred during a hard X-ray spectral state, and had a peak intensity of ~30-50 per cent of the Eddington limit with no signs of photospheric...

Topics: Astrophysics, High Energy Astrophysical Phenomena

Source: http://arxiv.org/abs/1601.01680

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Jun 29, 2018
06/18

Jun 29, 2018
by
LHCb collaboration; R. Aaij; C. Abellán Beteta; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; P. Carniti; L. Carson; K. Carvalho Akiba; G. Casse; L. Cassina; L. Castillo Garcia; M. Cattaneo; Ch. Cauet; G. Cavallero; R. Cenci; S. Ali; M. Charles; Ph. Charpentier; M. Chefdeville; S. Chen; S. -F. Cheung; N. Chiapolini; M. Chrzaszcz; X. Cid Vidal; G. Ciezarek; P. E. L. Clarke; G. Alkhazov; M. Clemencic; H. V. Cliff; J. Closier; V. Coco; J. Cogan; E. Cogneras; V. Cogoni; L. Cojocariu; G. Collazuol; P. Collins; P. Alvarez Cartelle; A. Comerma-Montells; A. Contu; A. Cook; M. Coombes; S. Coquereau; G. Corti; M. Corvo; B. Couturier; G. A. Cowan; D. C. Craik; A. A. Alves; A. Crocombe; M. Cruz Torres; S. Cunliffe; R. Currie; C. D'Ambrosio; E. Dall'Occo; J. Dalseno; P. N. Y. David; A. Davis; O. De Aguiar Francisco; S. Amato; K. De Bruyn; S. De Capua; M. De Cian; J. M. De Miranda; L. De Paula; P. De Simone; C. -T. Dean; D. Decamp; M. Deckenhoff; L. Del Buono; S. Amerio; N. Déléage; M. Demmer; D. Derkach; O. Deschamps; F. Dettori; B. Dey; A. Di Canto; F. Di Ruscio; H. Dijkstra; S. Donleavy; Y. Amhis; F. Dordei; M. Dorigo; A. Dosil Suárez; A. Dovbnya; K. Dreimanis; L. Dufour; G. Dujany; K. Dungs; P. Durante; R. Dzhelyadin; L. An; A. Dziurda; A. Dzyuba; S. Easo; U. Egede; V. Egorychev; S. Eidelman; S. Eisenhardt; U. Eitschberger; R. Ekelhof; L. Eklund; L. Anderlini; I. El Rifai; Ch. Elsasser; S. Ely; S. Esen; H. M. Evans; T. Evans; M. Fabianska; A. Falabella; C. Färber; N. Farley; G. Andreassi; S. Farry; R. Fay; D. Ferguson; V. Fernandez Albor; F. Ferrari; F. Ferreira Rodrigues; M. Ferro-Luzzi; S. Filippov; M. Fiore; M. Fiorini; M. Andreotti; M. Firlej; C. Fitzpatrick; T. Fiutowski; F. Fleuret; K. Fohl; P. Fol; M. Fontana; F. Fontanelli; D. C. Forshaw; R. Forty; J. E. Andrews; M. Frank; C. Frei; M. Frosini; J. Fu; E. Furfaro; A. Gallas Torreira; D. Galli; S. Gallorini; S. Gambetta; M. Gandelman; R. B. Appleby; P. Gandini; Y. Gao; J. García Pardiñas; J. Garra Tico; L. Garrido; D. Gascon; C. Gaspar; R. Gauld; L. Gavardi; G. Gazzoni; O. Aquines Gutierrez; D. Gerick; E. Gersabeck; M. Gersabeck; T. Gershon; Ph. Ghez; S. Gianì; V. Gibson; O. G. Girard; L. Giubega; V. V. Gligorov; F. Archilli; C. Göbel; D. Golubkov; A. Golutvin; A. Gomes; C. Gotti; M. Grabalosa Gándara; R. Graciani Diaz; L. A. Granado Cardoso; E. Graugés; E. Graverini; P. d'Argent; G. Graziani; A. Grecu; E. Greening; P. Griffith; L. Grillo; O. Grünberg; B. Gui; E. Gushchin; Yu. Guz; T. Gys; A. Artamonov; T. Hadavizadeh; C. Hadjivasiliou; G. Haefeli; C. Haen; S. C. Haines; S. Hall; B. Hamilton; X. Han; S. Hansmann-Menzemer; N. Harnew; M. Artuso; S. T. Harnew; J. Harrison; J. He; T. Head; V. Heijne; A. Heister; K. Hennessy; P. Henrard; L. Henry; J. A. Hernando Morata; E. Aslanides; E. van Herwijnen; M. Heß; A. Hicheur; D. Hill; M. Hoballah; C. Hombach; W. Hulsbergen; T. Humair; M. Hushchyn; N. Hussain; G. Auriemma; D. Hutchcroft; D. Hynds; M. Idzik; P. Ilten; R. Jacobsson; A. Jaeger; J. Jalocha; E. Jans; A. Jawahery; M. John; M. Baalouch; D. Johnson; C. R. Jones; C. Joram; B. Jost; N. Jurik; S. Kandybei; W. Kanso; M. Karacson; T. M. Karbach; S. Karodia; S. Bachmann; M. Kecke; M. Kelsey; I. R. Kenyon; M. Kenzie; T. Ketel; E. Khairullin; B. Khanji; C. Khurewathanakul; T. Kirn; S. Klaver; J. J. Back; K. Klimaszewski; O. Kochebina; M. Kolpin; I. Komarov; R. F. Koopman; P. Koppenburg; M. Kozeiha; L. Kravchuk; K. Kreplin; M. Kreps; A. Badalov; P. Krokovny; F. Kruse; W. Krzemien; W. Kucewicz; M. Kucharczyk; V. Kudryavtsev; A. K. Kuonen; K. Kurek; T. Kvaratskheliya; D. Lacarrere; C. Baesso; G. Lafferty; A. Lai; D. Lambert; G. Lanfranchi; C. Langenbruch; B. Langhans; T. Latham; C. Lazzeroni; R. Le Gac; J. van Leerdam; W. Baldini; J. -P. Lees; R. Lefèvre; A. Leflat; J. Lefrançois; E. Lemos Cid; O. Leroy; T. Lesiak; B. Leverington; Y. Li; T. Likhomanenko; R. J. Barlow; M. Liles; R. Lindner; C. Linn; F. Lionetto; B. Liu; X. Liu; D. Loh; I. Longstaff; J. H. Lopes; D. Lucchesi; C. Barschel; M. Lucio Martinez; H. Luo; A. Lupato; E. Luppi; O. Lupton; A. Lusiani; F. Machefert; F. Maciuc; O. Maev; K. Maguire; S. Barsuk; S. Malde; A. Malinin; G. Manca; G. Mancinelli; P. Manning; A. Mapelli; J. Maratas; J. F. Marchand; U. Marconi; C. Marin Benito; W. Barter; P. Marino; J. Marks; G. Martellotti; M. Martin; M. Martinelli; D. Martinez Santos; F. Martinez Vidal; D. Martins Tostes; L. M. Massacrier; A. Massafferri; V. Batozskaya; R. Matev; A. Mathad; Z. Mathe; C. Matteuzzi; A. Mauri; B. Maurin; A. Mazurov; M. McCann; J. McCarthy; A. McNab; V. Battista; R. McNulty; B. Meadows; F. Meier; M. Meissner; D. Melnychuk; M. Merk; E Michielin; D. A. Milanes; M. -N. Minard; D. S. Mitzel; A. Bay; J. Molina Rodriguez; I. A. Monroy; S. Monteil; M. Morandin; P. Morawski; A. Mordà; M. J. Morello; J. Moron; A. B. Morris; R. Mountain; L. Beaucourt; F. Muheim; D. Müller; J. Müller; K. Müller; V. Müller; M. Mussini; B. Muster; P. Naik; T. Nakada; R. Nandakumar; J. Beddow; A. Nandi; I. Nasteva; M. Needham; N. Neri; S. Neubert; N. Neufeld; M. Neuner; A. D. Nguyen; T. D. Nguyen; C. Nguyen-Mau; F. Bedeschi; V. Niess; R. Niet; N. Nikitin; T. Nikodem; A. Novoselov; D. P. O'Hanlon; A. Oblakowska-Mucha; V. Obraztsov; S. Ogilvy; O. Okhrimenko; I. Bediaga; R. Oldeman; C. J. G. Onderwater; B. Osorio Rodrigues; J. M. Otalora Goicochea; A. Otto; P. Owen; A. Oyanguren; A. Palano; F. Palombo; M. Palutan; L. J. Bel; J. Panman; A. Papanestis; M. Pappagallo; L. L. Pappalardo; C. Pappenheimer; W. Parker; C. Parkes; G. Passaleva; G. D. Patel; M. Patel; V. Bellee; C. Patrignani; A. Pearce; A. Pellegrino; G. Penso; M. Pepe Altarelli; S. Perazzini; P. Perret; L. Pescatore; K. Petridis; A. Petrolini; N. Belloli; M. Petruzzo; E. Picatoste Olloqui; B. Pietrzyk; M. Pikies; D. Pinci; A. Pistone; A. Piucci; S. Playfer; M. Plo Casasus; T. Poikela; I. Belyaev; F. Polci; A. Poluektov; I. Polyakov; E. Polycarpo; A. Popov; D. Popov; B. Popovici; C. Potterat; E. Price; J. D. Price; E. Ben-Haim; J. Prisciandaro; A. Pritchard; C. Prouve; V. Pugatch; A. Puig Navarro; G. Punzi; W. Qian; R. Quagliani; B. Rachwal; J. H. Rademacker; G. Bencivenni; M. Rama; M. Ramos Pernas; M. S. Rangel; I. Raniuk; N. Rauschmayr; G. Raven; F. Redi; S. Reichert; A. C. dos Reis; V. Renaudin; S. Benson; S. Ricciardi; S. Richards; M. Rihl; K. Rinnert; V. Rives Molina; P. Robbe; A. B. Rodrigues; E. Rodrigues; J. A. Rodriguez Lopez; P. Rodriguez Perez; J. Benton; S. Roiser; V. Romanovsky; A. Romero Vidal; J. W. Ronayne; M. Rotondo; T. Ruf; P. Ruiz Valls; J. J. Saborido Silva; N. Sagidova; B. Saitta; A. Berezhnoy; V. Salustino Guimaraes; C. Sanchez Mayordomo; B. Sanmartin Sedes; R. Santacesaria; C. Santamarina Rios; M. Santimaria; E. Santovetti; A. Sarti; C. Satriano; A. Satta; R. Bernet; D. M. Saunders; D. Savrina; S. Schael; M. Schiller; H. Schindler; M. Schlupp; M. Schmelling; T. Schmelzer; B. Schmidt; O. Schneider; A. Bertolin; A. Schopper; M. Schubiger; M. -H. Schune; R. Schwemmer; B. Sciascia; A. Sciubba; A. Semennikov; A. Sergi; N. Serra; J. Serrano; M. -O. Bettler; L. Sestini; P. Seyfert; M. Shapkin; I. Shapoval; Y. Shcheglov; T. Shears; L. Shekhtman; V. Shevchenko; A. Shires; B. G. Siddi; M. van Beuzekom; R. Silva Coutinho; L. Silva de Oliveira; G. Simi; M. Sirendi; N. Skidmore; T. Skwarnicki; E. Smith; E. Smith; I. T. Smith; J. Smith; S. Bifani; M. Smith; H. Snoek; M. D. Sokoloff; F. J. P. Soler; F. Soomro; D. Souza; B. Souza De Paula; B. Spaan; P. Spradlin; S. Sridharan; P. Billoir; F. Stagni; M. Stahl; S. Stahl; S. Stefkova; O. Steinkamp; O. Stenyakin; S. Stevenson; S. Stoica; S. Stone; B. Storaci; T. Bird; S. Stracka; M. Straticiuc; U. Straumann; L. Sun; W. Sutcliffe; K. Swientek; S. Swientek; V. Syropoulos; M. Szczekowski; T. Szumlak; A. Birnkraut; S. T'Jampens; A. Tayduganov; T. Tekampe; G. Tellarini; F. Teubert; C. Thomas; E. Thomas; J. van Tilburg; V. Tisserand; M. Tobin; A. Bizzeti; J. Todd; S. Tolk; L. Tomassetti; D. Tonelli; S. Topp-Joergensen; N. Torr; E. Tournefier; S. Tourneur; K. Trabelsi; M. Traill; T. Blake; M. T. Tran; M. Tresch; A. Trisovic; A. Tsaregorodtsev; P. Tsopelas; N. Tuning; A. Ukleja; A. Ustyuzhanin; U. Uwer; C. Vacca; F. Blanc; V. Vagnoni; G. Valenti; A. Vallier; R. Vazquez Gomez; P. Vazquez Regueiro; C. Vázquez Sierra; S. Vecchi; M. van Veghel; J. J. Velthuis; M. Veltri; J. Blouw; G. Veneziano; M. Vesterinen; B. Viaud; D. Vieira; M. Vieites Diaz; X. Vilasis-Cardona; V. Volkov; A. Vollhardt; D. Voong; A. Vorobyev; S. Blusk; V. Vorobyev; C. Voß; J. A. de Vries; R. Waldi; C. Wallace; R. Wallace; J. Walsh; J. Wang; D. R. Ward; N. K. Watson; V. Bocci; D. Websdale; A. Weiden; M. Whitehead; J. Wicht; G. Wilkinson; M. Wilkinson; M. Williams; M. P. Williams; M. Williams; T. Williams; A. Bondar; F. F. Wilson; J. Wimberley; J. Wishahi; W. Wislicki; M. Witek; G. Wormser; S. A. Wotton; K. Wraight; S. Wright; K. Wyllie; N. Bondar; Y. Xie; Z. Xu; Z. Yang; J. Yu; X. Yuan; O. Yushchenko; M. Zangoli; M. Zavertyaev; L. Zhang; Y. Zhang; W. Bonivento; A. Zhelezov; A. Zhokhov; L. Zhong; V. Zhukov; S. Zucchelli; S. Borghi; M. Borisyak; M. Borsato; T. J. V. Bowcock; E. Bowen; C. Bozzi; S. Braun; M. Britsch; T. Britton; J. Brodzicka; N. H. Brook; E. Buchanan; C. Burr; A. Bursche; J. Buytaert; S. Cadeddu; R. Calabrese; M. Calvi; M. Calvo Gomez; P. Campana; D. Campora Perez; L. Capriotti; A. Carbone; G. Carboni; R. Cardinale; A. Cardini

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A search is performed for $D^{(*)+}_{sJ}$ mesons in the reactions $pp \to D^{*+} K^0_{\rm S} X$ and $pp \to D^{*0} K^+ X$ using data collected at centre-of-mass energies of 7 and 8 TeV with the LHCb detector. For the $D^{*+} K^0_{\rm S}$ final state, the decays $D^{*+} \to D^0 \pi^+$ with $D^0 \to K^- \pi^+$ and $D^0 \to K^- \pi^+ \pi^+ \pi^-$ are used. For $D^{*0} K^+$, the decay $D^{*0} \to D^0 \pi^0$ with $D^0 \to K^- \pi^+$ is used. A prominent $D_{s1}(2536)^+$ signal is observed in both...

Topic: High Energy Physics - Experiment

Source: http://arxiv.org/abs/1601.01495

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Jun 29, 2018
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Jun 29, 2018
by
L. Sánchez-Menguiano; S. F. Sánchez; I. Pérez; R. García-Benito; B. Husemann; D. Mast; A. Mendoza; T. Ruiz-Lara; Y. Ascasibar; J. Bland-Hawthorn; O. Cavichia; A. I. Díaz; E. Florido; L. Galbany; R. M. Gónzalez Delgado; C. Kehrig; R. A. Marino; I. Márquez; J. Masegosa; J. Méndez-Abreu; M. Mollá; A. del Olmo; E. Pérez; P. Sánchez-Blázquez; V. Stanishev; C. J. Walcher; Á. R. López-Sánchez; the CALIFA collaboration

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We measured the gas abundance profiles in a sample of 122 face-on spiral galaxies observed by the CALIFA survey and included all spaxels whose line emission was consistent with star formation. This type of analysis allowed us to improve the statistics with respect to previous studies, and to properly estimate the oxygen distribution across the entire disc to a distance of up to 3-4 disc effective radii (r$_e$). We confirm the results obtained from classical HII region analysis. In addition to...

Topics: Astrophysics, Astrophysics of Galaxies

Source: http://arxiv.org/abs/1601.01542

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Jun 29, 2018
06/18

Jun 29, 2018
by
Saptarshi Mandal; Moitri Maiti; Vipin Kerala Varma

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We investigate the von Neumann entanglement entropy and Schmidt gap in the ground state of the Kitaev model on the honeycomb lattice for square and cylindrical subsystems. We find that, for both the subsystems, the free-fermionic contribution to the entanglement entropy $S_E$ exhibits signatures of the phase transitions between the gapless and gapped phases. However, we find that $S_E$ does not show an expected monotonic behaviour as a function of the coupling $J_z$ between the suitably defined...

Topics: High Energy Physics - Theory, Quantum Physics, Condensed Matter, Strongly Correlated Electrons

Source: http://arxiv.org/abs/1601.01695

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Jun 29, 2018
06/18

Jun 29, 2018
by
D. Mogilevtsev; E. Reyes-Gomez; S. B. Cavalcanti; L. E. Oliveira

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A theoretical investigation on slow light propagation based on eletromagnetically induced transparency in a three-level quantum-dot system is performed including non-Markovian effects and correlated dephasing reservoirs. It is demonstraonated that the non-Markovian nature of the process is quite essential even for conventional dephasing typical of quantum dots leading to significant enhancement or inhibition of the group velocity slow-down factor as well as to the shifting and distortion of the...

Topic: Quantum Physics

Source: http://arxiv.org/abs/1601.01540

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Jun 29, 2018
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Jun 29, 2018
by
Ivan Šupić; Matty J. Hoban

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The verification of quantum devices is an important aspect of quantum information, especially with the emergence of more advanced experimental implementations of computation and secure communication. Within this, the theory of device-independent robust self-testing via Bell tests has reached a level of maturity now that many quantum states and measurements can be verified without direct access to the quantum systems: interaction with the devices is solely classical. However, the requirements...

Topic: Quantum Physics

Source: http://arxiv.org/abs/1601.01552

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Jun 29, 2018
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Jun 29, 2018
by
Filomena Pacella; Michael Plum; Dagmar Rütters

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We prove existence, non-degeneracy, and exponential decay at infinity of a non-trivial solution to Emden's equation $-\Delta u = | u |^3$ on an unbounded $L$-shaped domain, subject to Dirichlet boundary conditions. Besides the direct value of this result, we also regard this solution as a building block for solutions on expanding bounded domains with corners, to be established in future work. Our proof makes heavy use of computer assistance: Starting from a numerical approximate solution, we...

Topics: Analysis of PDEs, Mathematics

Source: http://arxiv.org/abs/1601.01543

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Jun 29, 2018
06/18

Jun 29, 2018
by
Raquel Queiroz; Eslam Khalaf; Ady Stern

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We present a dimensional reduction argument to derive the classification reduction of fermionic symmetry protected topological phases in the presence of interactions. The dimensional reduction proceeds by relating the topological character of a $d$-dimensional system to the number of zero-energy bound states localized at zero-dimensional topological defects present at its surface. This correspondence leads to a general condition for symmetry preserving interactions that render the system...

Topics: Superconductivity, Condensed Matter, Strongly Correlated Electrons

Source: http://arxiv.org/abs/1601.01596

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0.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Juan M. Torres-Rincon; Joerg Aichelin

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Recent consensus on the $N_f=2+1$ equation of state at vanishing chemical potential from different lattice-QCD groups has spoiled the previous agreement with the outcome from the mean-field Polyakov-Nambu-Jona-Lasinio model. In this letter we review the thermodynamics of the PNJL model introducing two important aspects needed to describe the pressure computed in the lattice QCD. First, we consider the thermodynamics of the model beyond the mean-field approach to include pseudoscalar and scalar...

Topics: High Energy Physics - Phenomenology, Nuclear Theory

Source: http://arxiv.org/abs/1601.01706

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0.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Amir Porat; Esben Ravn Andresen; Hervé Rigneault; Dan Oron; Sylvain Gigan; Ori Katz

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Flexible fiber-optic endoscopes provide a minimally-invasive solution for imaging at depths beyond the reach of conventional microscopes. Current endoscopes require focusing and/or scanning mechanisms at the distal end, which limit miniaturization and frame-rate, and induce aberrations. Alternative lensless solutions are based on adaptive wavefront-correction, but are extremely sensitive to fiber bending. Here, we demonstrate a novel endoscopic approach, which enables single-shot imaging at a...

Topics: Optics, Physics

Source: http://arxiv.org/abs/1601.01518

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2.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Shoulong Li; Hao Wei

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To explain the accelerated expansion of our universe, many dark energy models and modified gravity theories have been proposed so far. It is argued in the literature that they are difficult to be distinguished on the cosmological scales. Therefore, it is well motivated to consider the relevant astrophysical phenomena on (or below) the galactic scales. In this work, we study the stability of self-gravitating differentially rotating galactic disks in $f(T)$ theory, and obtain the local stability...

Topics: High Energy Physics - Theory, Astrophysics, Cosmology and Nongalactic Astrophysics, Astrophysics of...

Source: http://arxiv.org/abs/1601.01625

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Jun 29, 2018
06/18

Jun 29, 2018
by
Tenindra Abeywickrama; Muhammad Aamir Cheema; David Taniar

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A k nearest neighbor (kNN) query on road networks retrieves the k closest points of interest (POIs) by their network distances from a given location. Today, in the era of ubiquitous mobile computing, this is a highly pertinent query. While Euclidean distance has been used as a heuristic to search for the closest POIs by their road network distance, its efficacy has not been thoroughly investigated. The most recent methods have shown significant improvement in query performance. Earlier studies,...

Topics: Data Structures and Algorithms, Computing Research Repository

Source: http://arxiv.org/abs/1601.01549

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3.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Viraj Pandya; John Mulchaey; Jenny E. Greene

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We present the first comprehensive archival study of the X-ray properties of ultracompact dwarf (UCD) galaxies, with the goal of identifying weakly-accreting central black holes in UCDs. Our study spans 578 UCDs distributed across thirteen different host systems, including clusters, groups, fossil groups, and isolated galaxies. Of the 336 spectroscopically-confirmed UCDs with usable archival Chandra imaging observations, 21 are X-ray-detected. Imposing a completeness limit of...

Topics: Astrophysics, Astrophysics of Galaxies

Source: http://arxiv.org/abs/1601.01690

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Jun 29, 2018
06/18

Jun 29, 2018
by
Yoshitaka Hatta; Bo-Wen Xiao; Feng Yuan

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We investigate the close connection between the quantum phase space Wigner distribution of small-$x$ gluons and the color dipole scattering amplitude, and propose to study it experimentally in the hard diffractive dijet production at the planned electron-ion collider. The angular correlation between the nucleon recoiled momentum and the dijet transverse momentum will probe the nontrivial correlation in the phase space Wigner distribution. This experimental study will not only provide us with...

Topics: High Energy Physics - Phenomenology, Nuclear Theory

Source: http://arxiv.org/abs/1601.01585

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0.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Peter Lindqvist

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The time derivative (in the sense of distributions) of the solutions to the Evolutionary p-Laplace Equation is proved to be a function in a local Lebesgue space.

Topics: Analysis of PDEs, Mathematics

Source: http://arxiv.org/abs/1601.01563

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1.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Alexei Zhukov; Victor Kurbatsky; Nikita Tomin; Denis Sidorov; Daniil Panasetsky; Aoife Foley

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One of the most promising approaches for complex technical systems analysis employs ensemble methods of classification. Ensemble methods enable to build a reliable decision rules for feature space classification in the presence of many possible states of the system. In this paper, novel techniques based on decision trees are used for evaluation of the reliability of the regime of electric power systems. We proposed hybrid approach based on random forests models and boosting models. Such...

Topics: Artificial Intelligence, Computing Research Repository, Learning

Source: http://arxiv.org/abs/1601.01675

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0.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Trygve Johnsen; Hugues Verdure

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We define generalized Hamming weights for almost affine codes. We show how various aspects and applications of generalized Hamming weights for linear codes, such as Wei duality, generalized Kung's bound, profiles, connection to wire-tap channels of type II, apply to the larger class of almost affine codes in general. In addition we discuss duality of almost affine codes,and of the smaller class of multilinear codes. We also give results about weight distributions of infinite series of almost...

Topics: Information Theory, Computing Research Repository, Mathematics

Source: http://arxiv.org/abs/1601.01504

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0.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Petr Klan

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The concept of integration is generally applicable to automatic control of processes. As shown in this paper, integral controller performs efficient searches in the extensive prime sets, too. An inspiration by the simple analytic rules for PID controller tuning results in integral controller that ensures predictable work regardless of the cardinality of primes. It gives an innovative application of the feedback control which relates to a gradient method.

Topics: Systems and Control, Computing Research Repository

Source: http://arxiv.org/abs/1601.01951

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0.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Damir Yeliussizov

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Stable Grothendieck polynomials can be viewed as a K-theory analog of Schur polynomials. We extend stable Grothendieck polynomials to a two-parameter version, which we call canonical stable Grothendieck functions. These functions have the same structure constants (with scaling) as stable Grothendieck polynomials, and (composing with parameter switching) are self-dual under the standard involutive ring automorphism. We study various properties of these functions, including combinatorial...

Topics: Combinatorics, Mathematics

Source: http://arxiv.org/abs/1601.01581

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Jun 29, 2018
06/18

Jun 29, 2018
by
Genki Kusano; Kenji Fukumizu; Yasuaki Hiraoka

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Topological data analysis (TDA) is an emerging mathematical concept for characterizing shapes in complex data. In TDA, persistence diagrams are widely recognized as a useful descriptor of data, and can distinguish robust and noisy topological properties. This paper proposes a kernel method on persistence diagrams to develop a statistical framework in TDA. The proposed kernel satisfies the stability property and provides explicit control on the effect of persistence. Furthermore, the method...

Topics: Algebraic Topology, Mathematics

Source: http://arxiv.org/abs/1601.01741

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0.0

Jun 29, 2018
06/18

Jun 29, 2018
by
M. A. Pellegrini; M. C. Tamburini Bellani

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This paper is a new contribution to the study of regular subgroups of the affine group $AGL_n(F)$, for any field $F$. In particular we associate to any partition $\lambda\neq (1^{n+1})$ of $n+1$ abelian regular subgroups in such a way that different partitions define non-conjugate subgroups. Moreover, we classify the regular subgroups of certain natural types for $n\leq 4$. Our classification is equivalent to the classification of split local algebras of dimension $n+1$ over $F$. Our methods,...

Topics: Group Theory, Rings and Algebras, Mathematics

Source: http://arxiv.org/abs/1601.01679

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0.0

Jun 29, 2018
06/18

Jun 29, 2018
by
P. J. Silva; O. Oliveira

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The correlations between the modulus of the Polyakov loop, its phase $\theta$ and the Landau gauge gluon propagator at finite temperature are investigated in connection with the center symmetry for pure Yang-Mills SU(3) theory. In the deconfined phase, where the center symmetry is spontaneously broken, the phase of the Polyakov loop per configuration is close to $\theta = 0$, $\pm \, 2 \pi /3$. We find that the gluon propagator form factors associated with $\theta \approx 0$ differs...

Topic: High Energy Physics - Lattice

Source: http://arxiv.org/abs/1601.01594

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Jun 29, 2018
06/18

Jun 29, 2018
by
Edgar J. Patiño; N. G. Kelkar

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Measurements of current-voltage (I-V) characteristics of a high quality Al/Al$_2$O$_3$/Al junction at temperatures ranging from 3.5 K to 300 K have been used to extract the barrier properties. Fitting results using Simmons' model led to a constant value of barrier width $s$$\sim$20.8~$\textrm{\AA}$ and a continuous increase in the barrier height with decreasing temperature. The latter is used to determine the energy band gap temperature dependence and average phonon frequency $\omega$ = 2.05...

Topics: Mesoscale and Nanoscale Physics, Materials Science, Condensed Matter, Quantum Physics

Source: http://arxiv.org/abs/1601.01609

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Jun 29, 2018
06/18

Jun 29, 2018
by
Chad Giusti; Robert Ghrist; Danielle S. Bassett

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The language of graph theory, or network science, has proven to be an exceptional tool for addressing myriad problems in neuroscience. Yet, the use of networks is predicated on a critical simplifying assumption: that the quintessential unit of interest in a brain is a dyad -- two nodes (neurons or brain regions) connected by an edge. While rarely mentioned, this fundamental assumption inherently limits the types of neural structure and function that graphs can be used to model. Here, we...

Topics: Quantitative Biology, Quantitative Methods, Neurons and Cognition, Algebraic Topology, Mathematics

Source: http://arxiv.org/abs/1601.01704

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Jun 29, 2018
06/18

Jun 29, 2018
by
P. S. Bhupal Dev; Alejandro Ibarra

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We discuss the current status and future prospects of heavy neutrino searches at the energy frontier, which might play an important role in vindicating the simplest seesaw paradigm as the new physics responsible for neutrino mass generation. After summarizing the current search limits and potential improvements at hadron colliders, we highlight the unparalleled sensitivities achievable in the clean environment of future lepton colliders.

Topics: High Energy Physics - Phenomenology, High Energy Physics - Experiment

Source: http://arxiv.org/abs/1601.01658

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Jun 29, 2018
06/18

Jun 29, 2018
by
Hong-Yi Xie; Heqiu Li; Yang-Zhi Chou; Matthew S. Foster

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The combination of Rashba spin-orbit coupling and potential disorder induces a random current operator for the edge states of a 2D topological insulator. We prove that charge transport through such an edge is ballistic at any temperature, with or without Luttinger liquid interactions. The solution exploits a mapping to a spin 1/2 in a time-dependent field that preserves the projection along one randomly undulating component (integrable dynamics). Our result is exact and rules out random Rashba...

Topics: Mesoscale and Nanoscale Physics, Condensed Matter, Strongly Correlated Electrons

Source: http://arxiv.org/abs/1601.01684

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Jun 29, 2018
06/18

Jun 29, 2018
by
Francesco D'Eramo; Jordy de Vries; Paolo Panci

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We study the effective field theory obtained by extending the Standard Model field content with two singlets: a 750 GeV (pseudo-)scalar and a stable fermion. Accounting for collider productions initiated by both gluon and photon fusion, we investigate where the theory is consistent with both the LHC diphoton excess and bounds from Run 1. We analyze dark matter phenomenology in such regions, including relic density constraints as well as collider, direct, and indirect bounds. Scalar portal dark...

Topics: Astrophysics, High Energy Physics - Phenomenology, Cosmology and Nongalactic Astrophysics, High...

Source: http://arxiv.org/abs/1601.01571

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0.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Jose C. Nacher; Tomoshiro Ochiai

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Domination is the fastest-growing field within graph theory with a profound diversity and impact in real-world applications, such as the recent breakthrough approach that identifies optimized subsets of proteins enriched with cancer-related genes. Despite its conceptual simplicity, domination is a classical NP-complete decision problem which makes analytical solutions elusive and poses difficulties to design optimization algorithms for finding a dominating set of minimum cardinality in a large...

Topics: Physics, Physics and Society

Source: http://arxiv.org/abs/1601.01565

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Jun 29, 2018
06/18

Jun 29, 2018
by
Giacomo Aletti; Andrea Ghiglietti

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We consider systems of interacting Generalized Friedman's Urns (GFUs) having irreducible mean replacement matrices. The interaction is modeled through the probability to sample the colors from each urn, that is defined as convex combination of the urn proportions in the system. From the weights of these combinations we individuate subsystems of urns evolving with different behaviors. We provide a complete description of the asymptotic properties of urn proportions in each subsystem by...

Topics: Probability, Mathematics

Source: http://arxiv.org/abs/1601.01550

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Jun 29, 2018
06/18

Jun 29, 2018
by
Kriste Krstovski; David A. Smith; Michael J. Kurtz

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Retrieval systems for scholarly literature offer the ability for the scientific community to search, explore and download scholarly articles across various scientific disciplines. Mostly used by the experts in the particular field, these systems contain user community logs including information on user specific downloaded articles. In this paper we present a novel approach for automatically evaluating document similarity models in large collections of scholarly publications. Unlike typical...

Topics: Information Retrieval, Computing Research Repository

Source: http://arxiv.org/abs/1601.01611

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Jun 29, 2018
06/18

Jun 29, 2018
by
David Burgess; Petr Hellinger; Peter W. Gingell; Pavel M. Trávníček

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Supercritical collisionless perpendicular shocks have an average macrostructure determined primarily by the dynamics of ions specularly reflected at the magnetic ramp. Within the overall macrostructure, instabilities, both linear and nonlinear, generate fluctuations and microstructure. To identify the sources of such microstructure, high-resolution two- and three-dimensional simulations have been carried out using the hybrid method, wherein the ions are treated as particles and the electron...

Topics: Earth and Planetary Astrophysics, Space Physics, Astrophysics, Physics, Plasma Physics

Source: http://arxiv.org/abs/1601.01570

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Jun 29, 2018
06/18

Jun 29, 2018
by
Leon K. Harding; Richard T. Demers; Michael Hoenk; Pavani Peddada; Bijan Nemati; Michael Cherng; Darren Michaels; Leo S. Neat; Anthony Loc; Nathan Bush; David Hall; Neil Murray; Jason Gow; Ross Burgon; Andrew Holland; Alice Reinheimer; Paul R. Jorden; Douglas Jordand

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The Wide Field InfraRed Survey Telescope-Astrophysics Focused Telescope Asset (WFIRST-AFTA) mission is a 2.4-m class space telescope that will be used across a swath of astrophysical research domains. JPL will provide a high-contrast imaging coronagraph instrument - one of two major astronomical instruments. In order to achieve the low noise performance required to detect planets under extremely low flux conditions, the electron multiplying charge-coupled device (EMCCD) has been baselined for...

Topics: Astrophysics, Instrumentation and Methods for Astrophysics

Source: http://arxiv.org/abs/1601.01761

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Jun 29, 2018
06/18

Jun 29, 2018
by
Adetunmise C. Dada; Ted S. Santana; Ralph N. E. Malein; Antonios Koutroumanis; Yong Ma; Joanna M. Zajac; Ju Y. Lim; Jin D. Song; Brian D. Gerardot

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A key ingredient for quantum photonic technologies is an on-demand source of indistinguishable single photons. State-of-the-art indistinguishable single-photon sources typically employ resonant excitation pulses with fixed repetition rates, creating a string of single photons with predetermined arrival times. However, in future applications, an independent electronic signal from a larger quantum circuit or network will trigger the generation of an indistinguishable photon. Further, operating...

Topics: Quantum Physics, Atomic Physics, Condensed Matter, Physics, Mesoscale and Nanoscale Physics, Optics

Source: http://arxiv.org/abs/1601.01667

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Jun 29, 2018
06/18

Jun 29, 2018
by
A. E. Botha

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It is shown that probability densities of finite-time Lyapunov exponents, corresponding to chimera states, have a characteristic shape. Such distributions could be used as a signature of chimera states, particularly in systems for which the phases of all the oscillators cannot be measured directly. In such cases, the characteristic distribution may be obtained indirectly, via embedding techniques, thus making it possible to detect chimera states in systems where they could otherwise exist,...

Topics: Chaotic Dynamics, Nonlinear Sciences

Source: http://arxiv.org/abs/1601.01538

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1.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Alessio Benavoli; Marco Zaffalon

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The state space (SS) representation of Gaussian processes (GP) has recently gained a lot of interest. The main reason is that it allows to compute GPs based inferences in O(n), where $n$ is the number of observations. This implementation makes GPs suitable for Big Data. For this reason, it is important to provide a SS representation of the most important kernels used in machine learning. The aim of this paper is to show how to exploit the transient behaviour of SS models to map non-stationary...

Topics: Machine Learning, Statistics, Computing Research Repository, Learning

Source: http://arxiv.org/abs/1601.01544

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Jun 29, 2018
06/18

Jun 29, 2018
by
Patrick Hayden; Sepehr Nezami; Xiao-Liang Qi; Nathaniel Thomas; Michael Walter; Zhao Yang

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Tensor networks provide a natural framework for exploring holographic duality because they obey entanglement area laws. They have been used to construct explicit toy models realizing many interesting structural features of the AdS/CFT correspondence, including the non-uniqueness of bulk operator reconstruction in the boundary theory. In this article, we explore the holographic properties of networks of random tensors. We find that our models naturally incorporate many features that are...

Topics: High Energy Physics - Theory, Quantum Physics, Statistical Mechanics, Condensed Matter,...

Source: http://arxiv.org/abs/1601.01694

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1.0

Jun 29, 2018
06/18

Jun 29, 2018
by
Q. S. Zhang

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The classical 'ballistic' overshoot models show some contradictions and are not consistence with numerical simulations and asteroseismic studies. Asteroseismic studies imply that overshoot is a weak mixing process. Diffusion model is suitable to deal with it. The form of diffusion coefficient in a diffusion model is crucial. Because the overshoot mixing is related to the convective heat transport (i.e., entropy mixing), there should be a similarity between them. A recent overshoot mixing model...

Topics: Astrophysics, Solar and Stellar Astrophysics

Source: http://arxiv.org/abs/1601.01756

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Jun 29, 2018
06/18

Jun 29, 2018
by
Baiying Liu

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We study model transition for representations occurring in the local theta correspondence between split even special orthogonal groups and symplectic groups, over a non-archimedean local field of characteristic zero.

Topics: Representation Theory, Mathematics

Source: http://arxiv.org/abs/1601.01669

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Jun 29, 2018
06/18

Jun 29, 2018
by
David Damanik; Anton Gorodetski

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We show that under natural technical conditions, the sum of a $C^2$ dynamically defined Cantor set with a compact set in most cases (for almost all parameters) has positive Lebesgue measure, provided that the sum of the Hausdorff dimensions of these sets exceeds one. As an application, we show that for many parameters, the Square Fibonacci Hamiltonian has spectrum of positive Lebesgue measure, while at the same time the density of states measure is purely singular.

Topics: Spectral Theory, Dynamical Systems, Mathematical Physics, Mathematics

Source: http://arxiv.org/abs/1601.01639