cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Extraction of energy from an extremal rotating electrovacuum black hole: Particle collisions in the equatorial plane
Creators: name: Hejda, Filip
name: Lemos, José P. S.
name: Zaslavskii, Oleg B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The collisional Penrose process received much attention when Banados, Silk and West (BSW) pointed out the possibility of test-particle collisions with arbitrarily high center-of-mass energy in the vicinity of the horizon of an extremally rotating black hole. However, the energy that can be extracted from the black hole in this promising, if simplified, scenario, called the BSW effect, turned out to be subject to unconditional upper bounds. And although such bounds were not found for the electrostatic variant of the process, this version is also astrophysically unfeasible, since it requires a maximally charged black hole. In order to deal with these deficiencies, we revisit the unified version of the BSW effect concerning collisions of charged particles in the equatorial plane of a rotating electrovacuum black hole spacetime. Performing a general analysis of energy extraction through this process, we explain in detail how the seemingly incompatible limiting cases arise. Furthermore, we demonstrate that the unconditional upper bounds on the extracted energy are absent for arbitrarily small values of the black hole electric charge. Therefore, our setup represents an intriguing simplified model for possible highly energetic processes happening around astrophysical black holes, which may spin fast but can have only a tiny electric charge induced via interaction with an external magnetic field.
description: 25 pages, 2 tables, 1 figure
Radiowave Method of High Energy Neutrino Detection: calculation of the expected event rate
Creators: name: Provorov, A. L.
name: Zheleznykh, I. M.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The sensitivity of an ice radiowave detector to the anticipated high energy neutrino fluxes is calculated on the basis of a detailed threshold analysis and computation of the shower production rate. We show that diffuse neutrinos from Active Galactic Nuclei could be detectable in a radio detector of 1 sq.km area established in Central Antarctica.
description: To be published by Astroparticle Physics, LaTeX file, 11 pages
MOESM2 of Characterization and CRISPR-based genotyping of clinical trh-positive Vibrio parahaemolyticus
Creators: name: Jetnapang Kongrueng
name: Kanchana Srinitiwarawong
name: Nishibuchi, Mitsuaki
name: Pimonsri Mittraparp-Arthorn
name: Varaporn Vuddhakul
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Computational Biology

description: Additional file 2: Table S2. Foreign genetic element similar to spacers using CRISPR targets analysis.
Additional file 3 of The PI3K/AKT/mTOR signaling pathway is aberrantly activated in primary central nervous system lymphoma and correlated with a poor prognosis
Creators: name: Zhang, Xiaowei
name: Wu, Yuchen
name: Sun, Xuefei
name: Cui, Qu
name: Bai, Xueyan
name: Dong, Gehong
name: Gao, Zifen
name: Wang, Yaming
name: Gao, Chunji
name: Sun, Shengjun
name: Ji, Nan
name: Liu, Yuanbo
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 3: Supplementary Figure 1.
All roads lead to Rome: Supersolvables and Supercosets
Creators: name: Pesando, Igor
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show explicitly that the two recently proposed actions for the type IIB superstring propagating on AdS_{5} X S_{5} agree completely.
description: 1+4 pages. Corrected some typos
Alternative proofs of Shafer's inequality for inverse hyperbolic tangent
Creators: name: Bagul, Yogesh J.
name: Dhaigude, Ramkrishna M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics

description: We point out that a concise proof of Theorem 2 in the article, 'On a quadratic estimate of Shafer' by L. Zhu contains a small mistake. Correcting this mistake and giving alternative proofs of Theorem 2 is the main aim of this note.
International Trade Network: Country centrality and COVID-19 pandemic
Creators: name: Antonietti, Roberto
name: Falbo, Paolo
name: Fontini, Fulvio
name: Grassi, Rosanna
name: Rizzini, Giorgio
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Economics (econ.GN)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: International trade is based on a set of complex relationships between different countries that can be modelled as an extremely dense network of interconnected agents. On the one hand, this network might favour the economic growth of countries, but on the other, it can also favour the diffusion of diseases, like the COVID-19. In this paper, we study whether, and to what extent, the topology of the trade network can explain the rate of COVID-19 diffusion and mortality across countries. We compute the countries' centrality measures and we apply the community detection methodology based on communicability distance. Then, we use these measures as focal regressors in a negative binomial regression framework. In doing so, we also compare the effect of different measures of centrality. Our results show that the number of infections and fatalities are larger in countries with a higher centrality in the global trade network.
Improved Algorithms for Misspecified Linear Markov Decision Processes
Creators: name: Vial, Daniel
name: Parulekar, Advait
name: Shakkottai, Sanjay
name: Srikant, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: For the misspecified linear Markov decision process (MLMDP) model of Jin et al. [2020], we propose an algorithm with three desirable properties. (P1) Its regret after $K$ episodes scales as $K \max \{ \varepsilon_{\text{mis}}, \varepsilon_{\text{tol}} \}$, where $\varepsilon_{\text{mis}}$ is the degree of misspecification and $\varepsilon_{\text{tol}}$ is a user-specified error tolerance. (P2) Its space and per-episode time complexities remain bounded as $K \rightarrow \infty$. (P3) It does not require $\varepsilon_{\text{mis}}$ as input. To our knowledge, this is the first algorithm satisfying all three properties. For concrete choices of $\varepsilon_{\text{tol}}$, we also improve existing regret bounds (up to log factors) while achieving either (P2) or (P3) (existing algorithms satisfy neither). At a high level, our algorithm generalizes (to MLMDPs) and refines the Sup-Lin-UCB algorithm, which Takemura et al. [2021] recently showed satisfies (P3) for contextual bandits. We also provide an intuitive interpretation of their result, which informs the design of our algorithm.
description: This version adds an intuitive explanation in Section 3
Using New Submillimetre Surveys to Identify the Evolutionary Status of High-z Galaxies
Creators: name: Hughes, D. H.
name: Dunlop, J. S.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper describes a key submillimetre survey which we are currently conducting to address some of the outstanding questions in cosmology - how, at what epoch and over what period of time did massive galaxies form at high redshift? A summary of the technical feasibility of future submillimetre observations with new ground-based, airborne and satellite telescopes is also presented.
description: 6 pages, 3 postscript figures, LaTex uses Kluwer book style file crckapb10.sty, to appear in "Observational Cosmology with the New Radio Surveys", 13-15 January 1997, Puerto de la Cruz, Tenerife, M.Bremer, N.Jackson, I.Perez-Fournon (eds.), Kluwer
Theta angle versus CP violation in the leptonic sector
Creators: name: Dedes, A.
name: Pospelov, M.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Assuming that the axion mechanism of solving the strong CP problem does not exist and the vanishing of theta at tree level is achieved by some model-building means, we study the naturalness of having large CP-violating sources in the leptonic sector. We consider the radiative mechanisms which transfer a possibly large CP-violating phase in the leptonic sector to the theta parameter. It is found that large theta cannot be induced in the models with one Higgs doublet as at least three loops are required in this case. In the models with two or more Higgs doublets the dominant source of theta is the phases in the scalar potential, induced by CP violation in leptonic sector. Thus, in the MSSM framework the imaginary part of the trilinear soft-breaking parameter A_l generates the corrections to the theta angle already at one loop. These corrections are large, excluding the possibility of large phases, unless the universality in the slepton sector is strongly violated.
description: 5 pages, 2 figures
Enquête sur la gestion des signalements d’infection nosocomiale dans l’application e-SIN par les centres d’appui pour la prévention des infections associées aux soins : présentation des résultats
Creators: name: Floret, Nathalie
name: Jean-Christophe Delarozière
Publisher: name: Health & Co
Year: 2024
Subjects: Infection nosocomiale
Analyse des signalements
Établissement de santé
CPias

description: Devant l’explosion du nombre de signalements d’infection nosocomiale via l’application e-SIN, Santé publique France (SPF) a mis en place un groupe de travail pour optimiser leur traitement. Dans ce cadre, SPF a souhaité savoir comment les centres d’appui pour la prévention des infections associées aux soins (CPias) étaient organisés pour la gestion des signalements. Pour ce faire, le réseau national des CPias a mené une enquête auprès des 17 CPias par entretiens semi-dirigés en octobre 2023. Vingt-deux responsables de signalement ont été identifiés et 54 professionnels sont mobilisés au total. À l’ouverture d’un signalement, cinq CPias contactent systématiquement l’établissement de santé signalant, les autres ne le font qu’en cas de présence de certains critères (cluster, caractéristiques du pathogène, demande d’appui de l’établissement…). Dans la plupart des CPias, il n’existe pas de règle pour positionner le niveau d’action. Les données du signalement sont utilisées par douze CPias pour des communications ou des retours d’expérience. Les CPias se réunissent régulièrement avec SPF (et éventuellement les agences régionales de santé) pour le suivi des signalements. Une harmonisation intra-CPias de la gestion des signalements est facilitée par des temps d’échange formels ou informels. En revanche, il est nécessaire de redéfinir un cadre au niveau national pour standardiser les modalités de gestion inter-CPias du signalement.
title: ADCO, Cartulaire de Cîteaux pour les possessions de Chaugey et Maison-Dieu (Fin XVe siècle), Cart. 180 (11 H 755), 83 folios, f. 0118
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2017
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire de Cîteaux pour les possessions de Chaugey et Maison-Dieu (Fin XVe siècle), Archives départementales de la Côte-d'Or, Cart. 180 (11 H 755), 83 folios, f. 0118, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les possessions de Chaugey et Maison-Dieu (Fin XVe siècle), Archives départementales de la Côte-d'Or, Cart. 180 (11 H 755), 83 folios, f. 0118, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Field-induced multiple metal-insulator crossovers of correlated Dirac electrons of perovskite CaIrO$_3$
Creators: name: Yamada, R.
name: Fujioka, J.
name: Kawamura, M.
name: Sakai, S.
name: Hirayama, M.
name: Arita, R.
name: Okawa, T.
name: Hashizume, D.
name: Sato, T.
name: Kagawa, F.
name: Kurihara, R.
name: Tokunaga, M.
name: Tokura, Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The interplay between electron correlation and topology of relativistic electrons may lead to a new stage of the research on quantum materials and emergent functions. The emergence of various collective electronic orderings/liquids, which are tunable by external stimuli, is a remarkable feature of correlated electron systems, but has rarely been realized in the topological semimetals with high-mobility relativistic electrons. Here, we report that the correlated Dirac electrons with the Mott criticality in perovskite CaIrO$_3$ show unconventional field-induced successive metal-insulator-metal crossovers in the quantum limit accompanying a giant magnetoresistance (MR) with MR ratio of 3,500 % (18 T and 1.4 K). The analysis shows that the insulating state originates from the collective electronic ordering such as charge/spin density wave promoted by electron correlation, whereas it turns into the quasi-one-dimensional metal at higher fields due to the field-induced reduction of chemical potential, highlighting the highly field-sensitive character of correlated Dirac electrons.
description: 7 pages, 4 figures
Encirclement Guaranteed Cooperative Pursuit with Robust Model Predictive Control
Creators: name: Wang, Chen
name: Chen, Hua
name: Pan, Jia
name: Zhang, Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Multiagent Systems (cs.MA)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper studies a novel encirclement guaranteed cooperative pursuit problem involving $N$ pursuers and a single evader in an unbounded two-dimensional game domain. Throughout the game, the pursuers are required to maintain encirclement of the evader, i.e., the evader should always stay inside the convex hull generated by all the pursuers, in addition to achieving the classical capture condition. To tackle this challenging cooperative pursuit problem, a robust model predictive control (RMPC) based formulation framework is first introduced, which simultaneously accounts for the encirclement and capture requirements under the assumption that the evader's action is unavailable to all pursuers. Despite the reformulation, the resulting RMPC problem involves a bilinear constraint due to the encirclement requirement. To further handle such a bilinear constraint, a novel encirclement guaranteed partitioning scheme is devised that simplifies the original bilinear RMPC problem to a number of linear tube MPC (TMPC) problems solvable in a decentralized manner. Simulation experiments demonstrate the effectiveness of the proposed solution framework. Furthermore, comparisons with existing approaches show that the explicit consideration of the encirclement condition significantly improves the chance of successful capture of the evader in various scenarios.
Einfluss mechanischer Lasten auf die Herstellung von Stahl-Glaskeramik-Verbunden
Creators: name: Ehreiser, Benjamin Sebastian
Publisher: name: KIT Scientific Publishing
Year: 2019
Subjects: Glaskeramik
Sintern
Optische Dilatometrie
Bruchmechanik
Glass-Ceramics
Sintering
Optical Dilatometry
Fracture Mechanics

description: Diese Arbeit untersucht die Einsatzfähigkeit von Glaskeramiken als Fügematerial für Hochtemperaturbrennstoffzellen. Das Sinterverhalten verschiedener Glaslote wird unter Einfluss mechanischer Lasten im optischen Dilatometer untersucht. Dabei konnte ein Sinterfaktor bestimmt werden, der den Sinterfortschritt beeinflusst. Die Anhaftung der Glaslote am Interkonnektor wird im bruchmechanischen Experiment ermittelt.
Additional file 2: of Relationship between volume and outcome for congenital diaphragmatic hernia: a systematic review protocol
Creators: name: Morche, Johannes
name: Mathes, Tim
name: Jacobs, Anja
name: Pietsch, Barbara
name: Wessel, Lucas
name: Gruber, Sabine
name: Neugebauer, Edmund
name: Pieper, Dawid
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Sociology
subject: FOS: Sociology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy
subject: Computational Biology

description: Search strategies for medical databases and search engines. (DOCX 19Â kb)
Tau Physics
Creators: name: Pich, A.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The pure leptonic or semileptonic character of tau decays makes them a good laboratory to test the structure of the weak currents and the universality of their couplings to the gauge bosons. The hadronic $τ$ decay modes constitute an ideal tool for studying low--energy effects of the strong interactions in very clean conditions. New physics phenomena, such as a non-zero $m_{ν_τ}$ or violations of conservation laws can also be searched for with tau decays. The present experimental and theoretical status of tau physics is summarized.
description: 16 pages, 8 figures. Invited talk at the XIX International Symposium on Lepton and Photon Interactions at High Energies (Stanford, August 1999)
Supplementary Material 4: from The source of microbial transmission influences niche colonization and microbiome development
Creators: name: Tanger, Isabel S.
name: Stefanschitz, Julia
name: Schwert, Yannick
name: Roth, Olivia
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310499
subject: Evolutionary biology not elsewhere classified
classificationCode: 310799
subject: Microbiology not elsewhere classified
classificationCode: 320499
subject: Immunology not elsewhere classified

description: Summary of indicator species analysis juvenile development
EVIDENCE FOR A SCALAR GLUEBALL
Creators: name: Amsler, Claude
name: Close, Frank
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that the newly discovered scalar meson $f_0(1500)$ at LEAR has properties compatible with the lightest scalar glueball predicted by lattice QCD and incompatible with a $\qqbar$ state. We suggest that decays of glueballs are into pairs of glueballs (including $η, η'$ or $(ππ)_S$) or by mixing with nearby $Q\bar{Q}$ states. The partial widths of $f_0(1500)$ are in accord with this hypothesis, tests of which include characteristic radiative decays to $γϕ,γω, γρ$ and the prediction of a further scalar state, $f_0'(1500 - 1800)$ which couples strongly to $K\bar{K}$, $ηη$ and $ηη'$.
description: 10 pages. Latex. 3 figures available from authors
title: ADCO, Cart. 186 (11 H 71), f. 0009r
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la Côte-d'Or, C
art. 186 (11 H 71). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la
 Côte-d'Or, Cart. 186 (11 H 71), f. 0009r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-
project.eu/
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
Combinatorics of certain abelian Lie group arrangements and chromatic quasi-polynomials
Creators: name: Tran, Tan Nhat
name: Yoshinaga, Masahiko
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: The purpose of this paper is twofold. Firstly, we generalize the notion of characteristic polynomials of hyperplane and toric arrangements to those of certain abelian Lie group arrangements. Secondly, we give two interpretations for the chromatic quasi-polynomials and their constituents through subspace and toric viewpoints.
description: 16 pages
One-Dimensional Fragment over Words and Trees
Creators: name: Kieronski, Emanuel
name: Kuusisto, Antti
Publisher: name: arXiv
Year: 2021
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: One-dimensional fragment of first-order logic is obtained by restricting quantification to blocks of existential (universal) quantifiers that leave at most one variable free. We investigate this fragment over words and trees, presenting a complete classification of the complexity of its satisfiability problem for various navigational signatures, and comparing its expressive power with other important formalisms. These include the two-variable fragment with counting and the unary negation fragment.
description: Full version of [1] Emanuel Kieronski: One-Dimensional Logic over Words. CSL 2016: 38:1-38:15 [2] Emanuel Kieronski, Antti Kuusisto: One-Dimensional Logic over Trees. MFCS 2017: 64:1-64:13
Late Bronze Age Cypriot figurines: an investigation into variation and distribution
Creators: name: Bell, Catherine
Publisher: name: Macquarie University
Year: 2024
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: The study of anthropomorphic Late Bronze Age Cypriot figurines (1450 – 1125 BC) traditionally centres around their association to religion, their foreign elements, and their increased standardised design in contrast to earlier figurines from the Chalcolithic to the Early and Middle Bronze Ages (2500–1650 BCE). This paper aims to focus on the individual artisans to emphasise their agency by locating unique figurine traits in order to challenge the assumption in the scholarship that these figurines are homogenous. In addition, through a detailed investigation into the distribution of figurine traits across the island, this project aims to investigate specific inter-site relationships as well as provide evidence towards the political structure of Cyprus during this period. By reconceptualizing the figurines through a post-colonial perspective, as products of hybridisation, the figurines can no longer be seen as homogenous, but rather, each figurine can be viewed as a new entity born out of a negotiation of both local and foreign stylistic traits and are thus individual. From this perspective, a database of Late Bronze Age Cypriot figurine traits in conjunction with GIS mapping has been created in order to reveal shared and unique traits and their distribution across the island. From this data, it is clear that most of the traits are shared, however, around 22% of the traits are unique which reveals individual agency and the decision to create designs outside of the more common set. Through the investigation into the distribution of shared traits, four potential specific inter-site relationships have been revealed between Enkomi and the sites of Episkopi Bamboula, Ayios Theodoros Soleas, and Dhenia Kafkalla as well as between Alambra and Ayia Paraskevi. Furthermore, this project argues that the figurine data supports the independent polity model regarding the political configuration of Cyprus during the Late Bronze Age. The findings of this project indicate that a detailed investigation into stylistic variation and distribution of traits can reveal important insights into the movements of past individuals as well as their artistic choices.
About gamma^5 Chiral Interactions of Massive Particles in the (1/2,0)+(0,1/2) Representation
Creators: name: Dvoeglazov, Valeri V.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We argue that the self/anti-self charge conjugate states of the (1/2,0)\oplus (0,1/2) representation possess the axial charge. Furthermore, we analyze the recent claims of the \sim σ\cdot [A \times A^*] interaction terms for `fermions'. Finally, we briefly discuss the problem in the (1,0)\oplus (0,1) representation.
description: ReVTeX file, 14pp
The In-plane Expansion of Fractured Thermally Pre-stressed Glass Panes
Creators: name: Nielsen, Jens H.
name: Kraus, Michael A.
name: Schneider, Jens
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The present paper is concerned with deriving simplified design equations and charts for modeling in-plane expansion of fractured thermally pre-stressed glass panes using the method of equivalent temperature differences (ETD) together with a thermal expansion analogy for strains. The starting point is a theoretical method based on linear elastic fracture mechanics merged with approaches from stochastic geometry to predict the 2D-macro-scale fragmentation of glass. The approach is based on two influencing parameters of glass: (i) fragment particle size and (ii) fracture particle intensity, which are related to the pre-stress induced strain energy density before fracture. Further Finite Element (FE) analysis of single cylindrical glass particles allow for establishing functional relations of the glass fragment particle dimensions, the pre-stress level and the resulting maximum in-plane deformation. Combining the two parts of two-parameter fracture pattern modelling and FE results on fragment expansion, formulas and engineering design charts for quantifying the in-plane expansion of thermally pre-stressed glass panes due to fracturing via an ETD approach is derived and provided within this paper. Two examples from engineering practice serve as demonstrators on how to use our ETD approach to compute the equivalent temperature difference and resulting internal forces as well as deformations. This approach serves furthermore as a basis to estimate secondary effects (such as fracture expansion-induced deformations or stresses) on support structures or remaining parts of glass laminates in form of handy ETD load cases within analytical as well as FE analysis.
Additional file 2 of Large-scale genomic analysis of antimicrobial resistance in the zoonotic pathogen Streptococcus suis
Creators: name: Hadjirin, Nazreen F.
name: Miller, Eric L.
name: Murray, Gemma G. R.
name: Yen, Phung L. K.
name: Phuc, Ho D.
name: Wileman, Thomas M.
name: Hernandez-Garcia, Juan
name: Williamson, Susanna M.
name: Parkhill, Julian
name: Maskell, Duncan J.
name: Zhou, Rui
name: Fittipaldi, Nahuel
name: Gottschalk, Marcelo
name: Tucker, A. W. ( Dan)
name: Hoa, Ngo Thi
name: Welch, John J.
name: Weinert, Lucy A.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Additional file 2: Figures S1-S13 and Table S2. Fig S1 – Phylogenetic tree. Fig S2 – MICs in Canada & the UK. Fig S3 - The effects of candidate determinants on MIC for beta-lactams Fig S4 - The effects of candidate determinants on MIC for MLSB. Fig S5 - The effects of candidate alleles on MIC for tetracyclines. Fig S6 - The effects of candidate alleles on MIC for fluoroquinolone. Fig S7 - The effects of candidate alleles on MIC for the aminoglycoside, spectinomycin. Fig S8 - The effects of candidate alleles on MIC for the pleuromutilin, tiamulin. Fig S9 - The effects of candidate alleles on MIC for trimethoprim (TMP). Fig S10 - Variation in the presence of candidate AMR determinants explains consistent differences between genetic clusters. Fig S11 - Methods of using candidate determinants to predict MIC. Fig S12 - Allelic variation in ermB and unidentified sources of epistasis. Fig S13 -High levels of ‘nestedness’ suggest that resistance determinants to beta-lactams are acquired in a particular order. Table S2 - Binomial tests showing that novel AMR variants are independently associated with MIC in different genetic clusters.
Degree-corrected distribution-free model for community detection in weighted networks
Creators: name: Qing, Huan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: A degree-corrected distribution-free model is proposed for weighted social networks with latent structural information. The model extends the previous distribution-free models by considering variation in node degree to fit real-world weighted networks, and it also extends the classical degree-corrected stochastic block model from un-weighted network to weighted network. We design an algorithm based on the idea of spectral clustering to fit the model. Theoretical framework on consistent estimation for the algorithm is developed under the model. Theoretical results when edge weights are generated from different distributions are analyzed. We also propose a general modularity as an extension of Newman's modularity from un-weighted network to weighted network. Using experiments with simulated and real-world networks, we show that our method significantly outperforms the uncorrected one, and the general modularity is effective.
Can ensemble density functional theory yield accurate double excitations?
Creators: name: Sagredo, Francisca
name: Burke, Kieron
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The recent use of a new ensemble in density functional theory (DFT) to yield direct corrections to the Kohn-Sham transitions yields the elusive double excitations that are missed by time-dependent DFT with the standard adiabatic approximation. But accuracies are lower than for single excitations, and formal arguments suggest that direct corrections at the exchange level should not be sufficient. We show that in principle, EDFT with direct corrections can yield accurate doubles and explain the error in naive formal arguments about TDDFT. Exact calculations and analytic results on a simple model, the Hubbard dimer, illustrate the results, showing that the answer to the title question is typically yes.
description: 6 pages, 4 figures
On the time dependence of holographic complexity in a dynamical Einstein-dilaton model
Creators: name: Mahapatra, Subhash
name: Roy, Pratim
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the holographic "complexity=action'" (CA) and "complexity=volume" (CV) proposals in Einstein-dilaton gravity in all spacetime dimensions. We analytically construct an infinite family of black hole solutions and use CA and CV proposals to investigate the time evolution of the complexity. Using the CA proposal, we find dimensional dependent violation of the Lloyd bound in early as well as in late times. Moreover, depending on the parameters of the theory, the bound violation relative to the conformal field theory result can be tailored in the early times as well. In contrast to the CA proposal, the CV proposal in our model yields results similar to those obtained in the literature.
description: 33 pages, 27 figures, 1 table. Various typos corrected from the previous version, references and discussion added. Altered to match published version
Theoretical and Empirical Analysis of a Fast Algorithm for Extracting Polygons from Signed Distance Bounds
Creators: name: Markuš, Nenad
name: Sužnjević, Mirko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Graphics (cs.GR)
subject: Computational Geometry (cs.CG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Recently there has been renewed interest in signed distance bound representations due to their unique properties for 3D shape modelling. This is especially the case for deep learning-based bounds. However, it is beneficial to work with polygons in most computer-graphics applications. Thus, in this paper we introduce and investigate an asymptotically fast method for transforming signed distance bounds into polygon meshes. This is achieved by combining the principles of sphere tracing (or ray marching) with traditional polygonization techniques, such as Marching Cubes. We provide theoretical and experimental evidence that this approach is of the $O(N^2\log N)$ computational complexity for a polygonization grid with $N^3$ cells. The algorithm is tested on both a set of primitive shapes as well as signed distance bounds generated from point clouds by machine learning (and represented as neural networks). Given its speed, implementation simplicity and portability, we argue that it could prove useful during the modelling stage as well as in shape compression for storage.
 The code is available here: https://github.com/nenadmarkus/gridhopping
title: Ð Ð°ÑÑÐµÑ Ð¸ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ°Ð¼Ð½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: ÐÐ°Ð½Ð¶ÑÐ»Ð°, ÐÐ¾Ð½ÑÑÐ°Ð½ÑÐ¸Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2025
Subjects: Ð Ð°Ð¼Ñ
ÐÐ¾Ð½ÐµÑÐ½ÑÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² Ð¼ÐµÑÐ¾Ð´
ÐÐ°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÐ½ÑÐµ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸

description: ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÐµÑ ÑÐ¾Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ñ ÑÐ°Ð·Ð´ÐµÐ»Ð¾Ð² Ð¤ÐÐÐ¡ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ¾Ð² Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸ÑÐ¼ 23.05.01 Â«ÐÐ°Ð·ÐµÐ¼Ð½ÑÐµ ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ½Ð¾-ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÑÐµÐ´ÑÑÐ²Ð°Â», Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ Ð¼Ð°Ð³Ð¸ÑÑÑÐ¾Ð² Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ 23.04.02 Â«ÐÐ°Ð·ÐµÐ¼Ð½ÑÐµ ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ½Ð¾-ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÑÂ». Ð Ð°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÑÑÑÑ ÑÐ°Ð¼Ð½ÑÐµ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸, ÑÐ°ÑÐ°ÐºÑÐµÑÐ½ÑÐµ, Ð´Ð»Ñ ÑÑÐ¶ÐµÐ»Ð¾Ð³Ð¾ Ð¼Ð°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ñ. ÐÑÐ½Ð¾Ð²Ð½Ð¾Ðµ Ð²Ð½Ð¸Ð¼Ð°Ð½Ð¸Ðµ ÑÐ´ÐµÐ»ÐµÐ½Ð¾ ÑÐ°ÑÑÐµÑÑ ÑÐ°Ð¼ Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ ÐºÐ¾Ð½ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ°, Ð¿Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ñ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ°Ð·ÑÐµÑÐ°ÑÑÐ¸Ñ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ð¹, Ð¼Ð°ÑÑÐ¸ÑÑ Ð¶ÐµÑÑÐºÐ¾ÑÑÐ¸, Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ ÑÐ·Ð»Ð¾Ð²ÑÑ Ð¿ÐµÑÐµÐ¼ÐµÑÐµÐ½Ð¸Ð¹ Ð¸ ÑÐ¸Ð»Ð¾Ð²ÑÑ ÑÐ°ÐºÑÐ¾ÑÐ¾Ð² Ð² Ð±Ð°Ð»Ð¾ÑÐ½ÑÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ°Ñ. ÐÑÐ¸Ð²Ð¾Ð´ÑÑÑÑ Ð¿ÑÐ¸Ð¼ÐµÑÑ ÑÐ°ÑÑÐµÑÐ° Ð¿Ð»Ð¾ÑÐºÐ¸Ñ Ð¸ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½ÑÑ ÑÐ°Ð¼. ÐÑÑÐ»ÐµÐ´ÑÐµÑÑÑ Ð²Ð½ÐµÑÐ½Ð¸Ñ Ð·Ð°ÐºÑÐµÐ¿Ð»ÐµÐ½Ð¸Ð¹ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ Ð½Ð° Ð¿Ð¾Ð»ÑÑÐ°ÐµÐ¼ÑÐµ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ð¹ Ð² Ð±Ð°Ð»Ð¾ÑÐ½ÑÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ°Ñ Ð¸ Ð¿ÐµÑÐµÐ¼ÐµÑÐµÐ½Ð¸Ð¹ Ð² ÑÐ·Ð»Ð°Ñ. ÐÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½ ÑÐ¿Ð¾ÑÐ¾Ð± ÑÐ¾Ð²Ð¼ÐµÑÐµÐ½Ð¸Ñ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð¾ÑÐ½Ð¾Ð³Ð¾ Ð¸ Ð¿Ð¾Ð²ÐµÑÐ¾ÑÐ½Ð¾Ð³Ð¾ ÑÐ°ÑÑÐµÑÐ¾Ð² Ð² Ð²ÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð¹ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ðµ. ÐÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð¾ Ð´Ð»Ñ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ¾Ð² Ð¸ Ð¼Ð°Ð³Ð¸ÑÑÑÐ¾Ð², Ð¾Ð±ÑÑÐ°ÑÑÐ¸ÑÑÑ Ð¿Ð¾ ÑÐºÐ°Ð·Ð°Ð½Ð½ÑÐ¼ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸ÑÐ¼.
Neutrino oscillations with three flavors in matter: Applications to neutrinos traversing the Earth
Creators: name: Ohlsson, Tommy
name: Snellman, Hakan
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Analytic formulas are presented for three flavor neutrino oscillations in matter in the plane wave approximation. We calculate in particular the time evolution operator in both mass and flavor bases. We also find the transition probabilities expressed as functions of the vacuum mass squared differences, the vacuum mixing angles, and the matter density parameter. The application of this to neutrino oscillations for both atmospheric and long baseline neutrinos in a mantle-core-mantle step function model of the Earth's matter density profile is discussed.
description: 14 pages, 4 figures (PostScript), Elsevier LaTeX
Mixed membership distribution-free model
Creators: name: Qing, Huan
name: Wang, Jingli
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: Physics and Society (physics.soc-ph)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We consider the problem of community detection in overlapping weighted networks, where nodes can belong to multiple communities and edge weights can be finite real numbers. To model such complex networks, we propose a general framework - the mixed membership distribution-free (MMDF) model. MMDF has no distribution constraints of edge weights and can be viewed as generalizations of some previous models, including the well-known mixed membership stochastic blockmodels. Especially, overlapping signed networks with latent community structures can also be generated from our model. We use an efficient spectral algorithm with a theoretical guarantee of convergence rate to estimate community memberships under the model. We also propose the fuzzy weighted modularity to evaluate the quality of community detection for overlapping weighted networks with positive and negative edge weights. We then provide a method to determine the number of communities for weighted networks by taking advantage of our fuzzy weighted modularity. Numerical simulations and real data applications are carried out to demonstrate the usefulness of our mixed membership distribution-free model and our fuzzy weighted modularity.
Multiple lattice instabilities and complex ground state in Cs$_2$AgBiBr$_6$
Creators: name: He, Xing
name: Krogstad, Matthew
name: Gupta, Mayanak K
name: Lanigan-Atkins, Tyson
name: Mao, Chengjie
name: Ye, Feng
name: Liu, Yaohua
name: Hong, Tao
name: Chi, Songxue
name: Wei, Haotong
name: Huang, Jinsong
name: Rosenkranz, Stephan
name: Osborn, Raymond
name: Delaire, Olivier
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Metal halides perovskites (MHPs) are attracting considerable interest for optoelectronic applications, with Cs$_2$AgBiBr$_6$ one of the main contenders among lead-free systems. Cs$_2$AgBiBr$_6$ crystallizes in a nominally double-perovskite structure, but exhibits a soft lattice with large atomic fluctuations characteristic of MHPs. While crucial to understand electron-phonon and phonon-phonon couplings, the spatio-temporal correlations of these fluctuations remain largely unknown. Here, we reveal these correlations using comprehensive neutron and x-ray scattering measurements on Cs$_2$AgBiBr$_6$ single-crystals, complemented with first-principles simulations augmented with machine-learned neural-network potentials. We report the discovery of an unexpected complex modulated ground state structure containing several hundred atoms, arising from a soft-phonon instability of the low-temperature tetragonal phase. Further, our experiments and simulations both reveal extensive correlated 2D fluctuations of Br octahedra at finite temperature, arising from soft anharmonic optic phonons, reflecting very shallow potential wells. These results provide new insights into the atomic structure and fluctuations in MHPs, critical to understand and control their thermal and optoelectronic properties.
description: 12 pages, 4 figures
Discovery of a Luminous Quasar in the Nearby Universe
Creators: name: Torres, Carlos A. O.
name: Quast, Germano R.
name: Coziol, Roger
name: Jablonski, Francisco
name: de la Reza, Ramiro
name: Lepine, Jacques R. D.
name: Gregorio-Hetem, Jane
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the course of the Pico dos Dias survey (PDS), we identified the stellar like object PDS456 at coordinates alpha = 17h 28m 19.796s, delta = -14deg 15' 55.87'' (epoch 2000), with a relatively nearby (z = 0.184) and bright (B = 14.69) quasar. Its position at Galactic coordinates l_II = 10.4deg, b_II = +11.2deg, near the bulge of the Galaxy, may explain why it was not detected before. The optical spectrum of PDS456 is typical of a luminous quasar, showing a broad (FWHM ~ 4000 km/s) H_βline, very intense FeII lines and a weak [OIII]\lambda5007 line. PDS456 is associated to the infrared source IRAS 17254-1413 with a 60 \mum infrared luminosity L_{60} = 3.8 x 10^{45} erg/s. The relatively flat slopes in the infrared (α(25,60) = -0.33 and α(12,25) = -0.78) and a flat power index in the optical (F_ν \propto ν^{-0.72}) may indicate a low dust content. A good match between the position of PDS456 and the position of the X-ray source RXS J172819.3-141600 implies an X-ray luminosity L_x = 2.8 x 10^{44} erg/s. The good correlation between the strength of the emission lines in the optical and the X-ray luminosity, as well as the steep optical to X-ray index estimated (α_{ox} = -1.64) suggest that PDS456 is radio quiet. A radio survey previously performed in this region yields an upper limit for radio power at ~ 5 GHz of ~ 2.6 x 10^{30} erg/s/Hz. We estimate the Galactic reddening in this line-of-sight to be A_B \simeq 2.0, implying an absolute magnitude M_B = -26.7 (using H_0 = 75 km s^{-1} Mpc^{-1} and q_0 = 0). In the optical, PDS456 is therefore 1.3 times more luminous than 3C 273 and the most luminous quasar in the nearby (z \leq 0.3) Universe.
description: 12 pages, LaTeX (aasms4.sty) + 3 figures; accepted for publication in the Astrophysical Journal Letters
MOESM1 of Characterization and CRISPR-based genotyping of clinical trh-positive Vibrio parahaemolyticus
Creators: name: Jetnapang Kongrueng
name: Kanchana Srinitiwarawong
name: Nishibuchi, Mitsuaki
name: Pimonsri Mittraparp-Arthorn
name: Varaporn Vuddhakul
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Neuroscience
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Computational Biology

description: Additional file 1: Table S1. Urease production, haemolytic activity and the ratio of urease production to haemolytic activity of all 73 trh+ V. parahaemolyticus isolates.
Superresolution microscopy of optical fields using tweezer-trapped single atoms
Creators: name: Deist, Emma
name: Gerber, Justin A.
name: Lu, Yue-Hui
name: Zeiher, Johannes
name: Stamper-Kurn, Dan M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We realize a scanning probe microscope using single trapped $^{87}$Rb atoms to measure optical fields with subwavelength spatial resolution. Our microscope operates by detecting fluorescence from a single atom driven by near-resonant light and determining the ac Stark shift of an atomic transition from other local optical fields via the change in the fluorescence rate. We benchmark the microscope by measuring two standing-wave Gaussian modes of a Fabry-Pérot resonator with optical wavelengths of 1560 nm and 781 nm. We attain a spatial resolution of 300 nm, which is superresolving compared to the limit set by the 780 nm wavelength of the detected light. Sensitivity to short length scale features is enhanced by adapting the sensor to characterize an optical field via the force it exerts on the atom.
description: 5 pages, 4 figures; Accepted for publication in Phys. Rev. Lett
Efficient Quantum Network Communication using Optimized Entanglement-Swapping Trees
Creators: name: Ghaderibaneh, Mohammad
name: Zhan, Caitao
name: Gupta, Himanshu
name: Ramakrishnan, C. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum network communication is challenging, as the No-cloning theorem in quantum regime makes many classical techniques inapplicable. For long-distance communication, the only viable communication approach is teleportation of quantum states, which requires a prior distribution of entangled pairs (EPs) of qubits. Establishment of EPs across remote nodes can incur significant latency due to the low probability of success of the underlying physical processes.
 The focus of our work is to develop efficient techniques that minimize EP generation latency. Prior works have focused on selecting entanglement paths; in contrast, we select entanglement swapping trees--a more accurate representation of the entanglement generation structure. We develop a dynamic programming algorithm to select an optimal swapping-tree for a single pair of nodes, under the given capacity and fidelity constraints. For the general setting, we develop an efficient iterative algorithm to compute a set of swapping trees. We present simulation results which show that our solutions outperform the prior approaches by an order of magnitude and are viable for long-distance entanglement generation.