cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Measuring Zak phase in room-temperature atoms
Creators: name: Mao, Ruosong
name: Xu, Xingqi
name: Wang, Jiefei
name: Xu, Chenran
name: Qian, Gewei
name: Cai, Han
name: Zhu, Shi-Yao
name: Wang, Da-Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Cold atoms provide a flexible platform for synthesizing and characterizing topolog-ical matter, where geometric phases play a central role. However, cold atoms are intrinsically prone to thermal noise, which can overwhelm the topological response and hamper promised applications. On the other hand, geometric phases also de-termine the energy spectra of particles subjected to a static force, based on the po-larization relation between Wannier-Stark ladders and geometric Zak phases. By exploiting this relation, we develop a method to extract geometric phases from en-ergy spectra of room-temperature superradiance lattices, which are momentum-space lattices of timed Dicke states. In such momentum-space lattices the thermal motion of atoms, instead of being a source of noise, provides effective forces which lead to spectroscopic signatures of the Zak phases. We measure Zak phases direct-ly from the anti-crossings between Wannier-Stark ladders in the Doppler-broadened absorption spectra of superradiance lattices. Our approach paves the way of measuring topological invariants and developing their applications in room-temperature atoms.
description: 28 pages, 5 figures
Brauer and partition diagram models for phylogenetic trees and forests
Creators: name: Francis, Andrew
name: Jarvis, Peter D
Publisher: name: arXiv
Year: 2021
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Combinatorics (math.CO)
subject: Category Theory (math.CT)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: We introduce a correspondence between phylogenetic trees and Brauer diagrams, inspired by links between binary trees and matchings described by Diaconis and Holmes (1998). This correspondence gives rise to a range of semigroup structures on the set of phylogenetic trees, and opens the prospect of many applications. We furthermore extend the Diaconis-Holmes correspondence from binary trees to non-binary trees and to forests, showing for instance that the set of all forests is in bijection with the set of partitions of finite sets.
description: 27 pages, 18 figures. Version 3 has some additional figures and examples, and corrections to some typos
Dijkstra Monads Forever: Termination-Sensitive Specifications for Interaction Trees
Creators: name: Silver, Lucas
name: Zdancewic
Publisher: name: Zenodo
Year: 2020

description: This paper extends the Dijkstra monad framework, designed for writing specifications over effectful programs using monadic effects, to handle termination sensitive specifications over interactive programs. We achieve this by introducing base specification monads for non-terminating programs with uninterpreted events. We model such programs using interaction trees, a coinductive datatype for representing programs with algebraic effects in Coq, which we further develop by adding trace semantics. We show that this approach subsumes typical, simple proof principles. The framework is implemented as an extension of the Interaction Trees Coq library.
Callosciurus caniceps
Creators: name: Hoffmann, Robert S.
name: Anderson, Charles G.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Sciuridae
Callosciurus
Callosciurus caniceps

description: Callosciurus caniceps (Gray, 1842). Ann. Mag. Nat. Hist., [ser. 1], 10:263. TYPE LOCALITY: "Bhotan." Restricted by Robinson and Kloss (1918«:206) to N Tenasserim, Burma. DISTRIBUTION: Thailand, peninsular Burma, peninsular Malaysia, and adjacent islands. SYNONYMS: adangensis (Miller, 1903), altinsularis (Miller, 1903); bentincanus (Miller, 1903); bimaculatus (Temminck, 1853); casensis (Miller, 1903); chrysonotus (Blyth, 1847); concolor (Blyth, 1855); davisoni (Bonhote, 1901); domelicus (Miller, 1903); epomophorus (Bonhote, 1901); erubescens Cabrera, 1917; fallax (Robinson and Kloss, 1914); fluminalis (Robinson and Wroughton, 1911); hastilis Thomas, 1923; helgei (Gyldenstolpe, 1917); helvus (Shamel, 1930); inexpectatus (Kloss, 1916); lancavensis (Miller, 1903); lucas (Miller, 1903); mapravis Thomas and Robinson, 1921; matthaeus (Miller, 1903); milleri (Robinson and Wroughton, 1911); moheius Thomas and Robinson, 1921; mohillius Thomas and Robinson, 1921; nakanus Thomas and Robinson, 1921; panjioli Thomas and Robinson, 1921; panjius Thomas and Robinson, 1921; pipidonis Thomas and Robinson, 1921; samuiensis (Robinson and Kloss, 1914); sullivanus (Miller, 1903); tabaudius Thomas, 1922; tacopius Thomas and Robinson, 1921; telibius Thomas and Robinson, 1921; terutavensis (Thomas and Wroughton, 1909). COMMENTS: Revised by Moore and Tate (1965). Member of the caniceps species group.
description: Published as part of Robert S. Hoffmann & Charles G. Anderson, 1993, Order Rodentia - Family Sciuridae, pp. 419-465 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 421, DOI: 10.5281/zenodo.7353130
description: {"references": ["Moore, J. C., and G. H. H. Tate. 1965. A study of the diurnal squirrels, Sciurinae, of the Indian and Indochinese subregions. Fieldiana: Zoology, 48: 1 - 351."]}
Direct observation of multiple conduction-band minima in high-performance thermoelectric SnSe
Creators: name: Okawa, Mario
name: Akabane, Yuka
name: Maeda, Mizuki
name: Tan, Gangjian
name: Zhao, Li-Dong
name: Kanatzidis, Mercouri G.
name: Suzuki, Takeshi
name: Watanabe, Mari
name: Xu, Jiadi
name: Ren, Qianhui
name: Fujisawa, Masami
name: Kanai, Teruto
name: Itatani, Jiro
name: Shin, Shik
name: Okazaki, Kozo
name: Saini, Naurang L.
name: Mizokawa, Takashi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report time- and angle-resolved photoemission spectroscopy on SnSe which currently attracts great interest due to its extremely high thermoelectric performance. Laser-assisted photoemission signals are observed within $\pm$20 fs of the pump pulse arrival. Around 30-50 fs after the photoexcitation, the conduction band minima are not populated by the photoexcited electrons while the valence bands are considerably broadened. In going from 90 fs to 550 fs after the photoexcitation, the photoexcited carriers are decayed into the multiple conduction band minima. The observed conduction bands are consistent with the band structure calculations. The multiple conduction minima suggest possibility of high and anisotropic thermoelectric performance of n-type SnSe single crystal if it is realized.
description: 5 pages, 4 figures
Using synthetic emission maps to constrain the structure of the Milky Way
Creators: name: Pettitt, Alex
name: Dobbs, Clare
name: Acreman, David
name: Price, Daniel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the current standing of an investigation into the structure of the Milky Way. We use smoothed particle hydrodynamics (SPH) to simulate the ISM gas in the Milky Way under the effect of a number of different gravitational potentials representing the spiral arms and nuclear bars, both fixed and time-dependent. The gas is subject to ISM cooling and chemistry, enabling us to track the CO and HI density. We use a 3D grid-based radiative transfer code to simulate the emission from the SPH output, allowing for the construction of synthetic longitude-velocity maps as viewed from the Earth. By comparing these maps with the observed emission in CO and HI from the Milky Way (Dame et al. 2001, Kalberla et al. 2005), we can infer the arm/bar geometry that provides a best fit to our Galaxy. By doing so we aim to answer key questions concerning the morphology of the Milky Way such as the number of the spiral arms, the pattern speeds of the bar(s) and arms, the pitch angle of the arms and shape of the bar(s)
description: 6 pages, 5 figures, contributed talk, to appear in Proceedings of the IAU Symposium No. 298, "Setting the scene for Gaia and LAMOST"
Cosmic shear bispectrum from second-order perturbations in General Relativity
Creators: name: Bernardeau, Francis
name: Bonvin, Camille
name: Van de Rijt, Nicolas
name: Vernizzi, Filippo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Future lensing surveys will be nearly full-sky and reach an unprecedented depth, probing scales closer and closer to the Hubble radius. This motivates the study of the cosmic shear beyond the small-angle approximation and including general relativistic corrections that are usually suppressed on sub-Hubble scales. The complete expression of the reduced cosmic shear at second order including all relativistic effects was derived in [1]. In the present paper we compute the resulting cosmic shear bispectrum when all these effects are properly taken into account and we compare it to primordial non-Gaussianity of the local type. The new general relativistic effects are generically smaller than the standard non-linear couplings. However, their relative importance increases at small multipoles and for small redshifts of the sources. The dominant effect among these non standard corrections is due to the inhomogeneity of the source redshift. In the squeezed limit, its amplitude can become of the order of the standard couplings when the redshift of the sources is below 0.5. Moreover, while the standard non-linear couplings depend on the angle between the short and long mode, the relativistic corrections do not and overlap almost totally with local type non-Gaussianity. We find that they can contaminate the search for a primordial local signal by f_NL>10.
description: 41 pages, 8 figures, some modifications in the analysis of the redshift dependence in section 5, 1 new figure
Longitudinal and spin/valley Hall optical conductivity in single layer $MoS_{2}$
Creators: name: Li, Zhou
name: Carbotte, J. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A monolayer of $MoS_{2}$ has a non-centrosymmetric crystal structure, with spin polarized bands. It is a two valley semiconductor with direct gap falling in the visible range of the electromagnetic spectrum. Its optical properties are of particular interest in relation to valleytronics and possible device applications. We study the longitudinal and the transverse Hall dynamical conductivity which is decomposed into charge, spin and valley contributions. Circular polarized light associated with each of the two valleys separately is considered and results are filtered according to spin polarization. Temperature can greatly change the spin admixture seen in the frequency window where they are not closely in balance.
description: 8 pages, 5 figures, accepted by Phys. Rev. B
Diffusivities and kinetics of short-range and long-range orderings in Ni-Fe permalloys
Creators: name: Radchenko, T. M.
name: Tatarenko, V. A.
name: Bokoch, S. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The microscopic model of atomic diffusion is considered to describe the short-range order relaxation kinetics within the f.c.c.-Ni-Fe Permalloys. The model takes into account both the discrete and anisotropic characters of atomic jumps within the long-range field of concentration heterogeneities of the interacting atoms. The diffusion coefficients and activation energies for the disordered Ni-Fe permalloy are estimated with the evaluated probabilities of atomic jumps. As shown, the increasing of a temperature with a fixed composition influences on the 'potential' field of interatomic interaction ambiguously: the field 'potential' increases for defined coordination shells and decreases for some of other ones. Although the temperature increasing promotes the increasing of any atomic-probabilities jumps generally, but decreasing of the action of 'potential' field generated by the atoms of defined element and caused by its concentration heterogeneities onto the distant sites results in increasing of the atomic-jumps' probabilities of just this element, first of all, into the sites, which are more distant from the 'source' of heterogeneity. Within the framework of the static concentration waves' method along with the self-consistent field approximation, the Onsager-type kinetics equation is obtained to describe the long-range order relaxation by the L12-type superstructure. To calculate diffusivities for the ordered Ni3Fe permalloy, the independent, diffraction experimental data of the long-range order parameter relaxation are used. Theoretical curves of the long-range order time evolution for the non-stoichiometric f.c.c.-Ni-Fe permalloys are plotted. Decreasing of the concentration of alloying element results in decelerating of the long-range order parameter change and in increasing of its relaxation time.
Dilaton and Massive Hadrons in a Conformal Phase
Creators: name: Del Debbio, Luigi
name: Zwicky, Roman
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: As the number of fermion fields is increased, gauge theories are expected to undergo a transition from a QCD-like phase, characterised by confinement and chiral symmetry breaking, to a conformal phase, where the theory becomes scale-invariant at large distances. In this paper, we discuss some properties of a third phase, where spontaneously broken conformal symmetry is characterised by its Goldstone boson, the dilaton. In this phase, which we refer to as conformal dilaton phase, the massless pole corresponding to the Goldstone boson guarantees that the conformal Ward identities are satisfied in the infrared despite the other hadrons carrying mass. In particular, using renormalisation group arguments in Euclidean space, we show that for massless quarks the trace of the energy momentum tensor vanishes on all physical states as a result of the fixed point. This implies the vanishing of the gluon condensate and suggests that the scale breaking is driven by the quark condensate which has implications for the cosmological constant. In addition form factors obey an exact constraint for every hadron and are thus suitable probes to identify this phase in the context of lattice Monte Carlo studies. For this purpose we examine how the system behaves under explicit symmetry breaking, via quark-mass and finite-volume deformations. The dilaton mass shows hyperscaling under mass deformation, viz. $m_{D} = {\cal O}(m_q^{1/(1+γ^*)})$. This provides another clean search pattern.
description: 16pp + refs, 1 figure, corrected some typos, eq 2.3 and 2.4 (results unaffected)
Pushing the limits of the eigenstate thermalization hypothesis towards mesoscopic quantum systems
Creators: name: Steinigeweg, Robin
name: Khodja, Abdelah
name: Niemeyer, Hendrik
name: Gogolin, Christian
name: Gemmer, Jochen
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the ongoing discussion on thermalization in closed quantum many-body systems, the eigenstate thermalization hypothesis (ETH) has recently been proposed as a universal concept which attracted considerable attention. So far this concept is, as the name states, hypothetical. The majority of attempts to overcome this hypothetical character is based on exact diagonalization which implies for, e.g., spin systems a limitation to roughly 15 spins. In this Letter we present an approach which pushes this limit up to system sizes of roughly 35 spins, thereby going significantly beyond what is possible with exact diagonalization. A concrete application to a Heisenberg spin-ladder which yields conclusive results is demonstrated.
description: 5 pages, 3 figures, accepted for publication in Physical Review Letters
Isolating relativistic effects in large-scale structure
Creators: name: Bonvin, Camille
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a fully relativistic calculation of the observed galaxy number counts in the linear regime. We show that besides the density fluctuations and redshift-space distortions, various relativistic effects contribute to observations at large scales. These effects all have the same physical origin: they result from the fact that our coordinate system, namely the galaxy redshift and the incoming photons' direction, is distorted by inhomogeneities in our universe. We then discuss the impact of the relativistic effects on the angular power spectrum and on the two-point correlation function in configuration space. We show that the latter is very well adapted to isolate the relativistic effects since it naturally makes use of the symmetries of the different contributions. In particular, we discuss how the Doppler effect and the gravitational redshift distortions can be isolated by looking for a dipole in the cross-correlation function between a bright and a faint population of galaxies.
description: 26 pages, 7 figures. Invited contribution to a Classical and Quantum Gravity focus issue on "Relativistic Effects in Cosmology", edited by Kazuya Koyama
CADV: A software visualization approach for code annotations distribution
Creators: name: Lima, Phyllipe
name: Melegati, Jorge
name: Gomes, Everaldo
name: Pereira, Nathalya Stefhany
name: Guerra, Eduardo
name: Meirelles, Paulo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Code annotations is a widely used feature in Java systems to configure custom metadata on programming elements. Their increasing presence creates the need for approaches to assess and comprehend their usage and distribution. In this context, software visualization has been studied and researched to improve program comprehension in different aspects. This study aimed at designing a software visualization approach that graphically displays how code annotations are distributed and organized in a software system and developing a tool, as a reference implementation of the approach, to generate views and interact with users. We conducted an empirical evaluation through questionnaires and interviews to evaluate our visualization approach considering four aspects: effectiveness for program comprehension, perceived usefulness, perceived ease of use, and suitability for the intended audience. The resulting data was used to perform a qualitative and quantitative analysis. The tool identifies package responsibilities providing visual information about their annotations at different levels. Using the developed tool, the participants achieved a high correctness rate in the program comprehension tasks and performed very well in questions about the overview of the system under analysis. Finally, participants perceived that the tool outperforms existing approaches for code inspection when searching for information related to code annotations. The results show that the visualization approach using the developed tool is effective in program comprehension tasks related to code annotations, which can also be used to identify responsibilities in the application packages. Moreover, it was evaluated as suitable for newcomers to overview the usage of annotations in the system and for architects to perform a deep analysis that can potentially detect misplaced annotations and abnormal growths on their usage.
description: 53 pages
Reflection factorizations of Singer cycles
Creators: name: Lewis, Joel Brewster
name: Reiner, Victor
name: Stanton, Dennis
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 05A15, 05E10, 20C15

description: The number of shortest factorizations into reflections for a Singer cycle in GL_n(F_q) is shown to be (q^n-1)^(n - 1). Formulas counting factorizations of any length, and counting those with reflections of fixed conjugacy classes are also given. The method is a standard character-theory technique, requiring the compilation of irreducible character values for Singer cycles, semisimple reflections, and transvections. The results suggest several open problems and questions, which are discussed at the end.
description: Historical references added; final version to appear in J. Algebraic Combinatorics
ATTITUDE DES ENTREPRENEURS FACE AU FINANCEMENT DE CYCLE D'EXPLOITATION DES PETITES ET MOYENNES ENTREPRISES A MADAGASCAR
Creators: name: MAMIARISOA Jean Edith Françoise
name: RADIMILAHY Manana Asidy
name: MBIMA Césaire
name: BELA Christian
Publisher: name: Zenodo
Year: 2024

description: A Madagascar, la majorité de la population est pauvre. Ceux-ci n’ayant pas accès au système bancaire classique par manque de garanties fiables et autres facteurs. Il existe une faible contribution des banques et/ou microfinances au développement des PME à Madagascar. La question se pose comme suit: les services bancaires contribuent-ils suffisamment au processus de développement des PME malagasy? L’objectif de ce manuscrit est de faire un état de lieu sur la contribution des banques dans la croissance économique de Madagascar, à travers du cycle d’exploitation. Sur ce, nous avons retenu deux hypothèses suivantes : la grande majorité de la population malagasy se trouvent encore en dehors du circuit bancaire, et le circuit bancaire est indispensable au financement du cycle d’exploitation à Madagascar. Pour le réalisé, 120 Entreprises dans la région Analanjirofo ont été enquêtés. Les données ont été traitées sous Windows Word 2010 et analysés au logiciel SPSS version 20. Les résultats ont montré que dans cetterégion les entreprises sont dominées par les petites tailles (74%). Les chefsd’entreprises enquêtées ont terminé leur étude majoritairement en niveau secondaire (56%). Leur quasi-totalité ne pratique pas encore le financement à long terme de ses activités. Concernant les offres, plus de la moitié des entreprises ont déclaré qu’elles sont satisfaites des services offerts par les banques ou Microfinances, tandis que, 34% confirmaient le cas contraire. Une grande partie des PME (environ 68%) ont donné des réponses positives sur l’importance des services bancaire au développement de leurs activités, par contre, 32% déclaraient le cas contraire. En effet, dans la région Analanjirofo, les petites entreprises sont encore majoritairement exclues du financement par circuit bancaire, ceux sont encore des entreprises naissantes. Le niveau d’instruction du chef de l’organisation accompagné par une attitude défavorable au leadership managérial, l’inadéquation des offres des banques par rapport au contexte rural expliquent la fragilité de la contribution des institutions financière au développement des PME malagasy.
ความคงทนของทรายเคลือบสารที่มีฟอส 1% ในการกำจัดลูกน้ำยุงลายบ้านในอำเภอหันคา จังหวัดชัยนาท
Creators: name: เกรียงศักดิ์ เจตนะจิตร
Publisher: name: กองนวัตกรรมและวิจัย กรมควบคุมโรค
Year: 2552
Subjects: ความคงทน
ทรายเคลือบสารที่มีฟอส
ลูกน้ำยุงลายบ้าน

description: วารสารควบคุมโรค, 35, 3, 200-205
Three-point phase correlations: A new measure of non-linear large-scale structure
Creators: name: Wolstenhulme, Richard
name: Bonvin, Camille
name: Obreschkow, Danail
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We derive an analytical expression for a novel large-scale structure observable: the line correlation function. The line correlation function, which is constructed from the three-point correlation function of the phase of the density field, is a robust statistical measure allowing the extraction of information in the non-linear and non-Gaussian regime. We show that, in perturbation theory, the line correlation is sensitive to the coupling kernel F_2, which governs the non-linear gravitational evolution of the density field. We compare our analytical expression with results from numerical simulations and find a 1-sigma agreement for separations r<30 Mpc/h. Fitting formulae for the power spectrum and the non-linear coupling kernel at small scales allow us to extend our prediction into the strongly non-linear regime where we find a 1-sigma agreement with the simulations for r<2 Mpc/h. We discuss the advantages of the line correlation relative to standard statistical measures like the bispectrum. Unlike the latter, the line correlation is independent of the bias, in the regime where the bias is local and linear. Furthermore, the variance of the line correlation is independent of the Gaussian variance on the modulus of the density field. This suggests that the line correlation can probe more precisely the non-linear regime of gravity, with less contamination from the power spectrum variance.
description: 11 pages, 5 figures. v2: replacement of the low resolution simulations, more precise quantification of the agreement with simulations, references added. Matches published version. Our code to calculate the line correlation is available at http://blue-shift.ch/phase
Magnetic shield of PMT used in DAMPE electromagnetic calorimeter
Creators: name: Wang, Peilong
name: Zhang, Yunlong
name: Wang, Xiaolian
name: Xu, Zizong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The magnetic characteristics of photomultiplier tube R5610A-01 are studied in this paper. The experimental data shows that the gain of R5610A-01 loses about 53% when the magnetic field is 3G along its +X axis. A cylinder of one-layer permalloy strip is able to reduce the effect of 3G magnetic field on the PMT's gain to less than 1%.
description: 4 pages, 6 figures, accepted by Chinese Physics C
Optimising the measurement of relativistic distortions in large-scale structure
Creators: name: Bonvin, Camille
name: Hui, Lam
name: Gaztanaga, Enrique
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: It has been shown recently that relativistic distortions generate a dipolar modulation in the two-point correlation function of galaxies. To measure this relativistic dipole it is necessary to cross-correlate different populations of galaxies with for example different luminosities or colours. In this paper, we construct an optimal estimator to measure the dipole with multiple populations. We show that this estimator increases the signal-to-noise of the dipole by up to 35 percent. Using 6 populations of galaxies, in a survey with halos and number densities similar to those of the millennium simulation, we forecast a cumulative signal-to-noise of 4.4. For the main galaxy sample of SDSS at low redshift z<0.2 our optimal estimator predicts a cumulative signal-to-noise of 2.4. Finally we forecast a cumulative signal-to-noise of 7.4 in the upcoming DESI survey. These forecasts indicate that with the appropriate choice of estimator the relativistic dipole should be detectable in current and future surveys.
description: 20 pages, 8 figures. v2: 19 pages, 6 figures. Explicit derivation of the cancellation of the cosmic variance added. Some references added, minor changes to the text, main results unchanged. Matches version published in JCAP
Engineering the Quantum Anomalous Hall Effect in Graphene with Uniaxial Strains
Creators: name: Diniz, G. S.
name: Guassi, M. R.
name: Qu, F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically investigate the manipulation of the quantum anomalous Hall effect (QAHE) in graphene by means of the uniaxial strain. The values of Chern number and Hall conductance demonstrate that the strained graphene in presence of Rashba spin-orbit coupling and exchange field, for vanishing intrinsic spin-orbit coupling, possesses non-trivial topological phase which is robust against the direction and modulus of the strain. Besides, we also find that the interplay between Rashba and intrinsic spin-orbit couplings results in a topological phase transition in the strained graphene. Remarkably, as the strain strength is increased beyond approximately 7%, the critical parameters of the exchange field for triggering the quantum anomalous Hall phase transition show distinct behaviors - decrease (increase) for strains along zigzag (armchair) direction. Our findings open up a new platform for manipulation of the QAHE by an experimentally accessible strain deformation of the graphene structure, with promising application on novel quantum electronic devices with high energy efficiency performance.
description: Discussions improved and new references added. Comments/Suggestions are highly welcome
Measurement of the dipole in the cross-correlation function of galaxies
Creators: name: Gaztanaga, Enrique
name: Bonvin, Camille
name: Hui, Lam
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: It is usually assumed that in the linear regime the two-point correlation function of galaxies contains only a monopole, quadrupole and hexadecapole. Looking at cross-correlations between different populations of galaxies, this turns out not to be the case. In particular, the cross-correlations between a bright and a faint population of galaxies contain also a dipole. In this paper we present the first attempt to measure this dipole. We discuss the four types of effects that contribute to the dipole: relativistic distortions, evolution effect, wide-angle effect and large-angle effect. We show that the first three contributions are intrinsic anti-symmetric contributions that do not depend on the choice of angle used to measure the dipole. On the other hand the large-angle effect appears only if the angle chosen to extract the dipole breaks the symmetry of the problem. We show that the relativistic distortions, the evolution effect and the wide-angle effect are too small to be detected in the LOWz and CMASS sample of the BOSS survey. On the other hand with a specific combination of angles we are able to measure the large-angle effect with high significance. We emphasise that this large-angle dipole does not contain new physical information, since it is just a geometrical combination of the monopole and the quadrupole. However this measurement, which is in excellent agreement with theoretical predictions, validates our method for extracting the dipole from the two-point correlation function and it opens the way to the detection of relativistic effects in future surveys like e.g. DESI.
description: 15 pages, 17 figures. v2: 20 pages, 17 figures. Section IIIc partly rewritten, new section IIId, new figures 16 and 17. Main results unchanged. Matches published version in JCAP
Black hole remnant of black hole-neutron star coalescing binaries with arbitrary black hole spin
Creators: name: Pannarale, Francesco
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A model for determining the dimensionless spin parameter and mass of the black hole remnant of black hole-neutron star mergers with arbitrary initial black hole spin angular momentum, binary mass ratio, and neutron star mass and cold equation of state is formulated. Tests against numerical-relativity results are carried out, showing that both the dimensionless spin parameter and the final mass are accurately reproduced. For the first time, the behaviour of both quantities and of the l = 2, m = 2, n = 0 quasinormal mode frequency is inspected throughout the parameter space. Predictions of this frequency may be exploited to guide gravitational wave modelling and detection efforts, and to extract physical information from detected gravitational wave signals that would help us break degeneracies between binary black hole and black hole-neutron star systems, improve our understanding of compact binary formation, and constrain the neutron star equation of state.
description: 11 pages, 2 figures, 3 tables
Radio Pulsar Sub-Populations (II) : The Mysterious RRATs
Creators: name: Abhishek
name: Malusare, Namrata
name: N, Tanushree
name: Hegde, Gayathri
name: Konar, Sushan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Several conjectures have been put forward to explain the RRATs, the newest subclass of neutron stars, and their connections to other radio pulsars. This work discusses these conjectures in the context of the characteristic properties of the RRAT population. Contrary to expectations, it is seen that - a) the RRAT population is statistically un-correlated with the nulling pulsars, and b) the RRAT phenomenon is unlikely to be related to old age or death-line proximity. It is perhaps more likely that the special emission property of RRATs is a signature of them being later evolutionary phases of other types of neutron stars which may have resulted in restructuring of the magnetic fields.
description: 16 pages, 8 figures, 8 tables; Accepted in JApA (final version)
Corruption Drives the Emergence of Civil Society
Creators: name: Abdallah, Sherief
name: Sayed, Rasha
name: Rahwan, Iyad
name: LeVeck, Brad
name: Cebrian, Manuel
name: Rutherford, Alex
name: Fowler, James
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Peer punishment of free-riders (defectors) is a key mechanism for promoting cooperation in society. However, it is highly unstable since some cooperators may contribute to a common project but refuse to punish defectors. Centralized sanctioning institutions (for example, tax-funded police and criminal courts) can solve this problem by punishing both defectors and cooperators who refuse to punish. These institutions have been shown to emerge naturally through social learning and then displace all other forms of punishment, including peer punishment. However, this result provokes a number of questions. If centralized sanctioning is so successful, then why do many highly authoritarian states suffer from low levels of cooperation? Why do states with high levels of public good provision tend to rely more on citizen-driven peer punishment? And what happens if centralized institutions can be circumvented by individual acts of bribery? Here, we consider how corruption influences the evolution of cooperation and punishment. Our model shows that the effectiveness of centralized punishment in promoting cooperation breaks down when some actors in the model are allowed to bribe centralized authorities. Counterintuitively, increasing the sanctioning power of the central institution makes things even worse, since this prevents peer punishers from playing a role in maintaining cooperation. As a result, a weaker centralized authority is actually more effective because it allows peer punishment to restore cooperation in the presence of corruption. Our results provide an evolutionary rationale for why public goods provision rarely flourishes in polities that rely only on strong centralized institutions. Instead, cooperation requires both decentralized and centralized enforcement. These results help to explain why citizen participation is a fundamental necessity for policing the commons.
description: 24 pages, 7 figures (Press embargo in place until publication)
Callosciurus inornatus
Creators: name: Hoffmann, Robert S.
name: Anderson, Charles G.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Sciuridae
Callosciurus
Callosciurus inornatus

description: Callosciurus inornatus (Gray, 1867). Ann. Mag. Nat. Hist., ser. 3, 20:282. TYPE LOCALITY: "Loo Mountains." Restricted by Moore and Tate (1965:209) to "Mountains in Laos." DISTRIBUTION: Laos, N Vietnam, S Yunnan (China). SYNONYMS: imitator Thomas, 1925. COMMENTS: Revised by Moore and Tate (1965); member of the caniceps species group.
description: Published as part of Robert S. Hoffmann & Charles G. Anderson, 1993, Order Rodentia - Family Sciuridae, pp. 419-465 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 422, DOI: 10.5281/zenodo.7353130
description: {"references": ["Moore, J. C., and G. H. H. Tate. 1965. A study of the diurnal squirrels, Sciurinae, of the Indian and Indochinese subregions. Fieldiana: Zoology, 48: 1 - 351."]}
Cosmology and Fundamental Physics with the Euclid Satellite
Creators: name: Amendola, Luca
name: Appleby, Stephen
name: Avgoustidis, Anastasios
name: Bacon, David
name: Baker, Tessa
name: Baldi, Marco
name: Bartolo, Nicola
name: Blanchard, Alain
name: Bonvin, Camille
name: Borgani, Stefano
name: Branchini, Enzo
name: Burrage, Clare
name: Camera, Stefano
name: Carbone, Carmelita
name: Casarini, Luciano
name: Cropper, Mark
name: de Rham, Claudia
name: Dietrich, Joerg P.
name: Di Porto, Cinzia
name: Durrer, Ruth
name: Ealet, Anne
name: Ferreira, Pedro G.
name: Finelli, Fabio
name: Garcia-Bellido, Juan
name: Giannantonio, Tommaso
name: Guzzo, Luigi
name: Heavens, Alan
name: Heisenberg, Lavinia
name: Heymans, Catherine
name: Hoekstra, Henk
name: Hollenstein, Lukas
name: Holmes, Rory
name: Horst, Ole
name: Hwang, Zhiqi
name: Jahnke, Knud
name: Kitching, Thomas D.
name: Koivisto, Tomi
name: Kunz, Martin
name: La Vacca, Giuseppe
name: Linder, Eric
name: March, Marisa
name: Marra, Valerio
name: Martins, Carlos
name: Majerotto, Elisabetta
name: Markovic, Dida
name: Marsh, David
name: Marulli, Federico
name: Massey, Richard
name: Mellier, Yannick
name: Montanari, Francesco
name: Mota, David F.
name: Nunes, Nelson J.
name: Percival, Will
name: Pettorino, Valeria
name: Porciani, Cristiano
name: Quercellini, Claudia
name: Read, Justin
name: Rinaldi, Massimiliano
name: Sapone, Domenico
name: Sawicki, Ignacy
name: Scaramella, Roberto
name: Skordis, Constantinos
name: Simpson, Fergus
name: Taylor, Andy
name: Thomas, Shaun
name: Trotta, Roberto
name: Verde, Licia
name: Vernizzi, Filippo
name: Vollmer, Adrian
name: Wang, Yun
name: Weller, Jochen
name: Zlosnik, Tom
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Euclid is a European Space Agency medium class mission selected for launch in 2020 within the Cosmic Vision 2015 2025 program. The main goal of Euclid is to understand the origin of the accelerated expansion of the universe. Euclid will explore the expansion history of the universe and the evolution of cosmic structures by measuring shapes and redshifts of galaxies as well as the distribution of clusters of galaxies over a large fraction of the sky. Although the main driver for Euclid is the nature of dark energy, Euclid science covers a vast range of topics, from cosmology to galaxy evolution to planetary research. In this review we focus on cosmology and fundamental physics, with a strong emphasis on science beyond the current standard models. We discuss five broad topics: dark energy and modified gravity, dark matter, initial conditions, basic assumptions and questions of methodology in the data analysis. This review has been planned and carried out within Euclid's Theory Working Group and is meant to provide a guide to the scientific themes that will underlie the activity of the group during the preparation of the Euclid mission.
description: This article provides an update of arXiv:1206.1225, with different authors. Forecasts are not updated in this version
Manipulation of a two-photon pump in superconductor - semiconductor heterostructures
Creators: name: Baireuther, Paul
name: Orth, Peter P.
name: Vekhter, Ilya
name: Schmalian, Jörg
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the photon statistics, entanglement and squeezing of a pn-junction sandwiched between two superconducting leads, and show that such an electrically-driven photon pump generates correlated and entangled pairs of photons. In particular, we demonstrate that the squeezing of the fluctuations in the quadrature amplitudes of the emitted light can be manipulated by changing the relative phase of the order parameters of the superconductors. This reveals how macroscopic coherence of the superconducting state can be used to tailor the properties of a two-photon state.
description: 4+ pages, 3 figures; includes Supplemental Material (9 pages, 1 figure). Published version
Generative adversarial network for super-resolution imaging through a fiber
Creators: name: Li, Wei
name: Abrashitova, Ksenia
name: Osnabrugge, Gerwin
name: Amitonova, Lyubov V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Optics (physics.optics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: A multimode fiber represents the ultimate limit in miniaturization of imaging endoscopes. Here we propose a fiber imaging approach employing compressive sensing with a data-driven machine learning framework. We implement a generative adversarial network for image reconstruction without relying on a sample sparsity constraint. The proposed method outperforms the conventional compressive imaging algorithms in terms of image quality and noise robustness. We experimentally demonstrate speckle-based imaging below the diffraction limit at a sub-Nyquist speed through a multimode fiber.
Intermediate inflation from rainbow gravity
Creators: name: Barrow, John D.
name: Magueijo, Joao
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is possible to dualize theories based on deformed dispersion relations and Einstein gravity so as to map them into theories with trivial dispersion relations and rainbow gravity. This often leads to "dual inflation" without the usual breaking of the strong energy condition. We identify the dispersion relations in the original frame which map into "intermediate" inflationary models. These turn out to be particularly simple: power-laws modulated by powers of a logarithm. The fluctuations predicted by these scenarios are near, but not exactly scale-invariant, with a red running spectral index. These dispersion relations deserve further study within the context of quantum gravity and the phenomenon of dimensional reduction in the ultraviolet.
description: Version to appear in Physical Review D
Dark Radiation constraints on minicharged particles in models with a hidden photon
Creators: name: Vogel, Hendrik
name: Redondo, Javier
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the thermalization of a hidden sector consisting of minicharged fermions (MCPs) and massless hidden photons in the early Universe. The precise measurement of the anisotropies of the cosmic microwave background (CMB) by Planck and the relic abundance of light nuclei produced during big bang nucleosynthesis (BBN) constrain the amount of dark radiation of this hidden sector through the effective number of neutrino species, Neff. This study presents novel and accurate predictions of dark radiation in the strongly and weakly coupled regime for a wide range of model parameters. We give the value of Neff for MCP masses between 100 keV and 10 GeV and minicharges in the range 10^(-11)-1. Our results can be used to constrain MCPs with the current data and they are also a valuable indicator for future experimental searches, should the hint for dark radiation manifest itself in the next release of Planck's data.
description: 27 pages, 13 figures, matches the version accepted in JCAP
Global Phase Diagram of Disordered Type-II Weyl Semimetals
Creators: name: Wu, Yijia
name: Liu, Haiwen
name: Jiang, Hua
name: Xie, X. C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: With electron and hole pockets touching at the Weyl node, type-II Weyl semimetal is a newly proposed topological state distinct from its type-I cousin. We numerically study the localization effect for tilted type-I as well as type-II Weyl semimetals and give the global phase diagram. For dis- ordered type-I Weyl semimetal, an intermediate three-dimensional quantum anomalous Hall phase is confirmed between Weyl semimetal phase and diffusive metal phase. However, this intermediate phase is absent for disordered type-II Weyl semimetal. Besides, near the Weyl nodes, comparing to its type-I cousin, type-II Weyl semimetal possesses even larger ratio between the transport lifetime along the direction of tilt and the quantum lifetime. Near the phase boundary between the type-I and the type-II Weyl semimetals, infinitesimal disorder will induce an insulating phase so that in this region, the concept of Weyl semimetal is meaningless for real materials.
description: 7 pages, 5 figures
One-particle Green's functions from the quantum equation of motion algorithm
Creators: name: Rizzo, Jacopo
name: Libbi, Francesco
name: Tacchino, Francesco
name: Ollitrault, Pauline J.
name: Marzari, Nicola
name: Tavernelli, Ivano
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Many-body Green's functions encode all the properties and excitations of interacting electrons. While these are challenging to be evaluated accurately on a classical computer, recent efforts have been directed towards finding quantum algorithms that may provide a quantum advantage for this task, exploiting architectures that will become available in the near future. In this work we introduce a novel near-term quantum algorithm for computing one-particle Green's functions via their Lehmann representation. The method is based on a generalization of the quantum equation of motion algorithm that gives access to the charged excitations of the system. We demonstrate the validity of the present proposal by computing the Green's function of a two-site Fermi-Hubbard model on a IBM quantum processor.