cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Heavy-quark production with $k_t$-factorization: The importance of the sea-quark distribution
Creators: name: Guiot, Benjamin
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the fact that $k_t$-factorization calculations for heavy-quark production include only the $gg\rightarrow Q\bar{Q}$ contribution. The cases of fixed-flavor-number scheme and variable-flavor-number scheme calculations are analyzed separately. For the latter, we show that, similarly to the collinear factorization, the main contribution is given by the $Qg\rightarrow Qg$ process. In this scheme, calculations including only the $gg$ contribution should show a large discrepancy with the data. We show that, if they do not, it is because they include (effectively) a large $K$ factor.
description: Important modifications, new figures are added. Published in Phys. Rev. D 99, 074006 (2019)
HMC Dashboard on Open and FAIR Data in Helmholtz.
Creators: name: Sedeqi, Mojeeb Rahman
Publisher: name: Zenodo
Year: 2023

description: Assessing and monitoring the FAIRness of data is essential for improving FAIR data in distributed research organizations. Three challenges therein are(a) finding openly accessible data produced within the organization, (b) assessing the FAIRness of this data to identify systematic gaps, and (c)communicating the results by providing specific feedback and guidelines to support a FAIR data community-expertise across the organization. A firstmodular approach to address these challenges in the Helmholtz Association is now published as the HMC Dashboard on Open and FAIR Data inHelmholtz. It allows users to monitor, analyze and explore the state of open and FAIR data across the distributed research ecosystem.
Quantum State Smoothing for Linear Gaussian Systems
Creators: name: Laverick, Kiarn T.
name: Chantasri, Areeya
name: Wiseman, Howard M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum state smoothing is a technique for assigning a valid quantum state to a partially observed dynamical system, using measurement records both prior and posterior to an estimation time. We show that the technique is greatly simplified for Linear Gaussian quantum systems, which have wide physical applicability. We derive a closed-form solution for the quantum smoothed state, which is more pure than the standard filtered state, whilst still being described by a physical quantum state, unlike other proposed quantum smoothing techniques. We apply the theory to an on-threshold optical parametric oscillator, exploring optimal conditions for purity recovery by smoothing. The role of quantum efficiency is elucidated, in both low and high efficiency limits.
description: 6 pages, 3 figures, 5 pages Supplemental Material
Front form QED(3+1): The spin-multiplet structure of the positronium spectrum at strong coupling
Creators: name: Trittmann, U.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Numerical results on the positronium spectrum in the front form of QED at large coupling constant are presented. Emphasis is put on the question whether one can derive an effective interaction at all, and whether this effective interaction is rotationally invariant. (Proceedings of Les Houches 1997)
description: Latex, 8 pages, 5 figures
Closure of the Monte Carlo dynamical equations in the spherical Sherrington-Kirkpatrick model
Creators: name: Bonilla, L. L.
name: Padilla, F. G.
name: Parisi, G.
name: Ritort, F.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study the analytical solution of the Monte Carlo dynamics in the spherical Sherrington-Kirkpatrick model using the technique of the generating function. Explicit solutions for one-time observables (like the energy) and two-time observables (like the correlation and response function) are obtained. We show that the crucial quantity which governs the dynamics is the acceptance rate. At zero temperature, an adiabatic approximation reveals that the relaxational behavior of the model corresponds to that of a single harmonic oscillator with an effective renormalized mass.
description: Uuencoded file including: REVTEX (33 pages) and 7 figures (PostScript).
Non-extensive thermodynamics and stationary processes of localization
Creators: name: Fronzoni, Leone
name: Grigolini, Paolo
name: Montangero, Simone
Publisher: name: arXiv
Year: 1999
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We focus our attention on dynamical processes characterized by an entropic index Q<1. According to the probabilistic arguments of Tsallis and Bukman [C.Tsallis, D.J. Bukman, Phys. Rev. E 54,R2197 (1996)] these processes are subdiffusional in nature. The non-extensive generalization of the Kolmogorov-Sinai entropy yielding the same entropic index implies the stationary condition. We note, on the other hand, that enforcing the stationary property on subdiffusion has the effect of producing a localization process occurring within a finite time scale. We thus conclude that the stationary dynamic processes with Q<1 must undergo a localization process occurring at finite time. We check the validity of this conclusion by means of a numerical treatment of the dynamics of the logistic map at the critical point.
description: 7 pages, 4 figures
Two Photon Reactions at High Energies
Creators: name: Donnachie, A.
name: Dosch, H. G.
name: Rueter, Michael
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Cross sections for the reactions gamma^(*) gamma^(*) --> hadrons and gamma^(*) gamma^(*) --> 2 vector mesons are calculated as functions of energy (sqrt(s) > 20 GeV) and photon virtualities. Good agreement with experiment is obtained for the total hadronic cross section and, after allowing for a valence-quark contribution from the hadronic part of the photon, with the photon structure function at small x. The cross section for vector meson production are shown to be experimentally accessible for moderate values of Q^2. This is sufficient to probe the nature of the hard pomeron which has recently been proposed.
description: some changes in style, physics unchanged, final version to appear in Phys.Rev.D, LaTeX2e, graphicx package, 15 eps-figures, 15pp
D3.2 Impacts of Economic and Financial Instruments on Biodiversity in Spatial Planning
Creators: name: Zhu, Yuanzao
name: Wittmer, Heidi
name: Locher-Krause, Karla
Publisher: name: Zenodo
Year: 2023

description: This report documents the research work conducted under Task 3.2, WP3, which aims to understand the current impact of E&FIs outcomes on biodiversity in the context of spatial planning and environmental assessment. The structure of the report is as follows: Section 2 reviews the current application of E&FIs in spatial planning and analyses the position of E&FIs for enhancing biodiversity in practice with selected spatial planning instruments; Section 3 provides an overview of E&FI recommendations in the benchmark of environmental assessments, and describes the focus for analysing the use of E&FIs in environmental assessment projects; Section 4 discusses how E&FIs enhancing biodiversity can be positioned with examples of impact pathways towards transformative change; and Section 5 summarises the main findings under Task 3.2.
New topological invariants in non-Hermitian systems
Creators: name: Ghatak, Ananya
name: Das, Tanmoy
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Mathematical Physics (math-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Both theoretical and experimental studies of topological phases in non-Hermitian systems have made a remarkable progress in the last few years of research. In this article, we review the key concepts pertaining to topological phases in non-Hermitian Hamiltonians with relevant examples and realistic model setups. Discussions are devoted to both the adaptations of topological invariants from Hermitian to non-Hermitian systems, as well as origins of new topological invariants in the latter setup. Unique properties such as exceptional points and complex energy landscapes lead to new topological invariants including winding number/vorticity defined solely in the complex energy plane, and half-integer winding/Chern numbers. New forms of Kramers degeneracy appear here rendering distinct topological invariants. Modifications of adiabatic theory, time-evolution operator, biorthogonal bulk-boundary correspondence lead to unique features such as topological displacement of particles, `skin-effect', and edge-selective attenuated and amplified topological polarizations without chiral symmetry. Extension and realization of topological ideas in photonic systems are mentioned. We conclude with discussions on relevant future directions, and highlight potential applications of some of these unique topological features of the non-Hermitian Hamiltonians.
description: 28 pages, 11 figures. Invited review article. Typos corrected
Carnet nº 4, commencé à Novorossiïsk (p. 18)
Creators: name: Péraire, Lucien
name: CNRS
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2023

description: created: 3-3-1929
Non-perturbative regularization and renormalization: simple examples from non-relativistic quantum mechanics
Creators: name: Phillips, Daniel R.
name: Beane, Silas R.
name: Cohen, Thomas D.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We examine several zero-range potentials in non-relativistic quantum mechanics. The study of such potentials requires regularization and renormalization. We contrast physical results obtained using dimensional regularization and cutoff schemes and show explicitly that in certain cases dimensional regularization fails to reproduce the results obtained using cutoff regularization. First we consider a delta-function potential in arbitrary space dimensions. Using cutoff regularization we show that for $d \ge 4$ the renormalized scattering amplitude is trivial. In contrast, dimensional regularization can yield a nontrivial scattering amplitude for odd dimensions greater than or equal to five. We also consider a potential consisting of a delta function plus the derivative-squared of a delta function in three dimensions. We show that the renormalized scattering amplitudes obtained using the two regularization schemes are different. Moreover we find that in the cutoff-regulated calculation the effective range is necessarily negative in the limit that the cutoff is taken to infinity. In contrast, in dimensional regularization the effective range is unconstrained. We discuss how these discrepancies arise from the dimensional regularization prescription that all power-law divergences vanish. We argue that these results demonstrate that dimensional regularization can fail in a non-perturbative setting.
description: 19 pages, LaTeX, uses epsf.tex
Verso un nuovo CNR: quali strumenti per affrontare le sfide di una ricerca sempre più interdisciplinare e transdisciplinare
Creators: name: Pennisi, Maddalena
name: Sella, Lisa
name: Scartazza, Andrea
name: Molinaro, Sabrina
name: Adamo, Maria
name: Senesi, Giorgio
name: Franchini, Michela
name: De Pascale, Olga
name: Pieroni, Stefania
name: Baneschi, Ilaria
name: Di Donato, Francesca
name: Ragazzi, Elena
name: Gavrichkova, Olga
Publisher: name: Zenodo
Year: 2024

description: Le ricercatrici e i ricercatori del Cnr sempre più spesso portano avanti ricerche su sistemi complessi per le quali l’interdisciplinarità costituisce un requisito imprescindibile. Mettere in pratica l’interdisciplinarietà rappresenta tuttavia una sfida molto difficile. A differenza della multidisciplinarietà, nella quale le discipline si incontrano mantenendo la loro autonomia, l’interdisciplinarietà implica la creazione condivisa di un quadro teorico dell’obiettivo, dei concetti, dei metodi e delle terminologie adottate. A queste criticità si aggiungono gli attuali meccanismi di valutazione della ricerca che di fatto limitano la biblio-diversità, la valorizzazione delle diverse attività ed il multilinguismo.

Relazioni tenute il 26 ottobre 2023 presso l’Area della ricerca di Pisa del CNR.

Alla tavola rotonda hanno partecipato Riccardo Coratella (Direttore generale del Centro nazionale per la Biodiversità), Giovanni De Simone (Responsabile dell’Unità Pianificazione, Programmazione Biblioteca Centrale del CNR) e Massimo Spadoni (Responsabile dell’Ufficio Relazioni Europee del CNR).

La registrazione dell'evento è disponibile qui: https://centenario.cnr.it/evento/verso-un-nuovo-cnr-quali-strumenti-per-affrontare-le-sfide-di-una-ricerca-sempre-piu-interdisciplinare-e-transdisciplinare/
Copyright Fundamentals and Relevant Licenses for Research Data and Code
Creators: name: Nakhaie, Siamak
Publisher: name: FAIRmat
Year: 2024

description: This educational presentation, created for Love Data Week 2024, guides researchers through copyright law implications in research works, highlighting how to navigate the use and licensing of research data and code effectively.
description: This work is funded by the NFDI consortium FAIRmat - Deutsche Forschungsgemeinschaft (DFG) - Project 460197019
Verso un nuovo CNR: quali strumenti per affrontare le sfide di una ricerca sempre più interdisciplinare e transdisciplinare
Creators: name: Di Donato, Francesca
name: Pennisi, Maddalena
name: Sella, Lisa
name: Scartazza, Andrea
name: Molinaro, Sabrina
name: Adamo, Maria
name: Senesi, Giorgio
name: Franchini, Michela
name: De Pascale, Olga
name: Pieroni, Stefania
name: Baneschi, Ilaria
Publisher: name: Zenodo
Year: 2024

description: Le ricercatrici e i ricercatori del Cnr sempre più spesso portano avanti ricerche su sistemi complessi per le quali l’interdisciplinarità costituisce un requisito imprescindibile. Mettere in pratica l’interdisciplinarietà rappresenta tuttavia una sfida molto difficile. A differenza della multidisciplinarietà, nella quale le discipline si incontrano mantenendo la loro autonomia, l’interdisciplinarietà implica la creazione condivisa di un quadro teorico dell’obiettivo, dei concetti, dei metodi e delle terminologie adottate. A queste criticità si aggiungono gli attuali meccanismi di valutazione della ricerca che di fatto limitano la biblio-diversità, la valorizzazione delle diverse attività ed il multilinguismo.

Relazioni tenute il 26 ottobre 2023 presso l’Area della ricerca di Pisa del CNR.
Theory of tricriticality for miscut surfaces
Creators: name: Bhattacharjee, Somendra M.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We propose a theory for the observed tricriticality in the orientational phase diagram of Si(113) misoriented towards [001]. The systems seems to be at or close to a very special point for long range interactions.
description: Revtex, 1 ps figure
First results from the LUCID-Timepix spacecraft payload onboard the TechDemoSat-1 satellite in Low Earth Orbit
Creators: name: Furnell, Will
name: Shenoy, Abhishek
name: Fox, Elliot
name: Hatfield, Peter
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Langton Ultimate Cosmic ray Intensity Detector (LUCID) is a payload onboard the satellite TechDemoSat-1, used to study the radiation environment in Low Earth Orbit ($\sim$635km). LUCID operated from 2014 to 2017, collecting over 2.1 million frames of radiation data from its five Timepix detectors on board. LUCID is one of the first uses of the Timepix detector technology in open space, with the data providing useful insight into the performance of this technology in new environments. It provides high-sensitivity imaging measurements of the mixed radiation field, with a wide dynamic range in terms of spectral response, particle type and direction. The data has been analysed using computing resources provided by GridPP, with a new machine learning algorithm that uses the Tensorflow framework. This algorithm provides a new approach to processing Medipix data, using a training set of human labelled tracks, providing greater particle classification accuracy than other algorithms. For managing the LUCID data, we have developed an online platform called Timepix Analysis Platform at School (TAPAS). This provides a swift and simple way for users to analyse data that they collect using Timepix detectors from both LUCID and other experiments. We also present some possible future uses of the LUCID data and Medipix detectors in space.
description: Accepted for publication in Advances in Space Research
Magnetotunneling as a Probe of Luttinger-Liquid Behavior
Creators: name: Altland, Alexander
name: Barnes, C. H. W.
name: Hekking, F. W. J.
name: Schofield, A. J.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A novel method for detecting Luttinger-liquid behavior is proposed. The idea is to measure the tunneling conductance between a quantum wire and a parallel two-dimensional electron system as a function of both the potential difference between them, $V$, and an in-plane magnetic field, $B$. We show that the two-parameter dependence on $B$ and $V$ allows for a determination of the characteristic dependence on wave vector $q$ and frequency $ω$ of the {\it spectral function}, $A_{\rm LL}(q,ω)$, of the quantum wire. In particular, the separation of spin and charge in the Luttinger liquid should manifest itself as singularities in the $I$-$V$-characteristic. The experimental feasibility of the proposal is discussed.
description: Accepted for publication in Phys. Rev. Lett
Guidelines to guidelines and standards: facilitating the enhancement of the quality of library and information services in developing countries, with reference to Jamaica
Creators: name: Bond, Michelle A.F.
Publisher: name: Loughborough University
Year: 2021
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Guidelines to guidelines and standards: facilitating the enhancement of the quality of library and information services in developing countries, with reference to Jamaica
Additional file 1: of Segmentation of dust storm areas on Mars images using principal component analysis and neural network
Creators: name: Ryusei Gichu
name: Ogohara, Kazunori
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology

description: Figure S1. Images used for preparing the background image. (PDF 2866 kb)
Topology change and nuclear symmetry energy in compact-star matter
Creators: name: Liu, Xiang-Hai
name: Ma, Yong-Liang
name: Rho, Mannque
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that the cusp-like structure in the nuclear symmetry energy, a consequence of topology change, visible in the skyrmion lattice description of dense matter is extremely robust. It is present in the Skyrme model -- with the pion field only -- and is left unscathed by massive degrees of freedom such as the vector mesons $ρ$ and $ω$ and also the scalar meson introduced as a dilaton. It leads to the emergence of parity-doubling at the skyrmion-half-skyrmion transition and impacts on the nuclear symmetry energy "wilderness" landscape, weeding out roughly half of the wilderness. It is shown that a pseudo-conformal sound velocity arises at a precocious density at which the cusp is formed. It is suggested that the topology change, being robust, could impact on the tidal deformability observed in gravity waves
description: An appendix is added to briefly explain the procedure of the numerical calculation
Density fluctuations and multifragmentation of nuclear matter
Creators: name: Matera, F.
name: Dellafiore, A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Nuclear Theory (nucl-th)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The density fluctuations of nuclear matter are studied within a mean-field model in wich fluctuations are generated by an external stochastic field. The constraints imposed on the random force by the fluctuation-dissipation theorem are analyzed. It is shown that in the proximity of the borders of the spinodal region the assumption of a white-noise stochastic field can be reliably used. The domain distribution of the liquid phase in the spinodal decomposition of nuclear matter is derived. The related distribution of fragment sizes compares favourably with the experimental fragment distribution observed in heavy ion collisions.
description: 20 RevTex pages, 7 Postscript figures. Submitted to Phys. Rev. C
DECODING SEISMIC DISTURBANCES: EMPLOYING SDFA FOR PRECISE DISCRIMINATION
Creators: name: Marcelo da Silva, Linhares
Publisher: name: ZAP Journals
Year: 2024
Subjects: Smoothed Detrended Fluctuation Analysis (SDFA)
Seismic Waves
Wavelet Shrinkage
Human-Made Explosions
Source Identification

description: This study introduces the Smoothed Detrended Fluctuation Analysis (SDFA) method, proposed by Linhares in 2016, as a novel approach for describing the long-range correlation of time series. The methodology is grounded in the Detrended Fluctuation Analysis (DFA) introduced by Peng et al. (1994) and the wavelet shrinkage procedure outlined by Donoho and Johnstone (1994, 1995) and Vidakovic (1999). SDFA computes various statistical fluctuation measures denoted as F(l), where 'l' represents the window length. The wavelet shrinkage estimator F(l) is obtained for all window lengths (l). By varying the window length, F(l) can be characterized by a scaling exponent, specifically the slope coefficient derived from the regression of F(l) on ln(l), with 'l' ranging from 4 to g(n), where g(n) is determined as ⌊(ln(n))⌋ and 'n' is the length of the time series.

In the context of seismic analysis, waves of energy generated by human activities or natural phenomena present challenges in accurate statistical analysis. Seismic events caused by human-made explosions, such as those from mining, road excavation, and construction applications, introduce complexities that may lead to errors in seismicity analysis. This study addresses the need for methodologies capable of correctly identifying the source type generating a recorded seismic signal, emphasizing the importance of distinguishing between natural and anthropogenic seismic events. Beccar-Varela et al. (2016) highlight the significance of this challenge in the field of seismology.

The proposed SDFA method proves to be particularly relevant for monitoring human-made explosions, contributing to the development of robust techniques for source identification in seismic signals. The optimal choice for the number of regressors in the SDFA method, denoted by g(n) = ⌊(ln(n))⌋, where ⌊⋅⌋ represents the integer part function, is determined based on the length of the time series ('n'). This choice ensures an efficient and accurate application of the SDFA method for analyzing seismic data.
Geometry of Kodaira moduli spaces
Creators: name: Merkulov, Sergey A.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: A general theorem on the existence of natural torsion-free affine connections on a complete family of compact complex submanifolds in a complex manifold is proved. Applications to twistor theory are discussed.
description: 10 pages, LaTeX
Great public engagement with science is Cumulative
Creators: name: Catalyst Consulting Group
name: Long Term Ecological Research Network
name: Black-Maier, Allison
name: Peterman, Karen
name: Hart, Clarisse
name: Thompson, Jonathan
Publisher: name: Zenodo
Year: 2024
Subjects: public engagement with science
science communication

description: This publication is part of a six-part series of practice briefs describing the key elements of effective public engagement with science, based on the combined research and practitioner experience of the Advancing Public Engagement with Science Across LTERs (APEAL) Project, funded by the National Science Foundation under National Science Foundation award numbers 1713204,  2215187 and 2215188. The project was originated by Sarah Garlick and John Besley. Current principal investigators include John Belsey, Karen Peterman, Kari O'Connell and Martha Downs. 

For additional information on the project, visit our website at https://lternet.edu/apeal/main. 

The full series includes briefs on the following elements: 1) Strategic; 2) Cumulative; 3) Reciprocal; 4) Reflexive; 5) Equitable; 6) Evidence-based.
Harmonic Sums and Mellin Transforms up to two-loop Order
Creators: name: Blümlein, J.
name: Kurth, S.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A systematic study is performed on the finite harmonic sums up to level four. These sums form the general basis for the Mellin transforms of all individual functions $f_i(x)$ of the momentum fraction $x$ emerging in the quantities of massless QED and QCD up to two--loop order, as the unpolarized and polarized splitting functions, coefficient functions, and hard scattering cross sections for space and time-like momentum transfer. The finite harmonic sums are calculated explicitly in the linear representation. Algebraic relations connecting these sums are derived to obtain representations based on a reduced set of basic functions. The Mellin transforms of all the corresponding Nielsen functions are calculated.
description: 44 pages Latex, contract number added
New constraints on red-spiral galaxies from their kinematics in clusters of galaxies
Creators: name: Hamabata, Akinari
name: Oogi, Taira
name: Oguri, Masamune
name: Nishimichi, Takahiro
name: Nagashima, Masahiro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The distributions of the pairwise line-of-sight velocity between galaxies and their host clusters are segregated according to the galaxy's colour and morphology. We investigate the velocity distribution of red-spiral galaxies, which represents a rare population within galaxy clusters. We find that the probability distribution function of the pairwise line-of-sight velocity $v_{\rm{los}}$ between red-spiral galaxies and galaxy clusters has a dip at $v_{\rm{los}} = 0$, which is a very odd feature, at 93\% confidence level. To understand its origin, we construct a model of the phase space distribution of galaxies surrounding galaxy clusters in three-dimensional space by using cosmological $N$-body simulations. We adopt a two component model that consists of the infall component, which corresponds to galaxies that are now falling into galaxy clusters, and the splashback component, which corresponds to galaxies that are on their first (or more) orbit after falling into galaxy clusters. We find that we can reproduce the distribution of the line-of-sight velocity of red-spiral galaxies with the dip with a very simple assumption that red-spiral galaxies reside predominantly in the infall component, regardless of the choice of the functional form of their spatial distribution. Our results constrain the quenching timescale of red-spiral galaxies to a few Gyrs, and the radius where the morphological transformation is effective as $r \sim 0.2 h^{-1} \rm{Mpc}$.
description: 10 pages, 9 figures, accepted for publication in MNRAS
`t Hooft Anomaly Matching for QCD
Creators: name: Terning, John
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I present a set of theories which display non-trivial `t Hooft anomaly matching for QCD with $F$ flavors. The matching theories are non-Abelian gauge theories with "dual" quarks and baryons, rather than the purely confining theories of baryons that `t Hooft originally searched for. The matching gauge groups are required to have an $F\pm 6$ dimensional representation. Such a correspondence is reminiscent of Seiberg's duality for supersymmetric (SUSY) QCD, and these theories are candidates for non-SUSY duality. However anomaly matching by itself is not sufficiently restrictive, and duality for QCD cannot be established at present. At the very least, the existence of multiple anomaly matching solutions should provide a note of caution regarding conjectured non-SUSY dualities.
description: 8 pages, LaTeX, version to be published in PRL
Novel topological insulators from crystalline symmetries
Creators: name: Lau, Alexander
name: Ortix, Carmine
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We discuss recent advances in the study of topological insulators protected by spatial symmetries by reviewing three representative, theoretical examples. In three dimensions, these states of matter are generally characterized by the presence of gapless boundary states at surfaces that respect the protecting spatial symmetry. We discuss the appearance of these topological states both in crystals with negligible spin-orbit coupling and a fourfold rotational symmetry, as well as in mirror-symmetric crystals with sizable spin-orbit interaction characterized by the so-called mirror Chern number. Finally, we also discuss similar topological crystalline states in one-dimensional insulators, such as nanowires or atomic chains, with mirror symmetry. There, the prime physical consequence of the non-trivial topology is the presence of quantized end charges.
description: Mini-review, to appear in European Physical Journal Special Topics
MPEC 2025-G98 : 2025 GC1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2025 GC1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Duality in the Azbel-Hofstadter problem and the two-dimensional d-wave superconductivity with a magnetic field
Creators: name: Morita, Y.
name: Hatsugai, Y.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A single-parameter family of lattice-fermion model is constructed. It is a deformation of the Azbel-Hofstadter problem by a parameter $h={$B%((BDelta}/t$ (quantum parameter). A topological number is attached to each energy band. A duality between the classical limit ($h=+0$) and the quantum limit ($h=1$) is revealed in the energy spectrum and the topological number. The model has a close relation to the two-dimensional d-wave superconductivity with a magnetic field. Making use of the duality and a topological argument, we shed light on how the quasiparticles with a magnetic field behave especially in the quantum limit.
description: 3 pages with 5 postscript figures, RevTeX
"ISLOM IQTISODIYOTI" VA "ISLOM MOLIYASI" TUSHUNCHALARI VA  ISHLASH TARTIBI
Creators: name: Turopova, Nigora
name: Choriyev, Manuchehr
Publisher: name: Zenodo
Year: 2024

description: ushbu tezisda hozirda Islom moliyasi sektori yildan yilga o‘sib bormoqda bu yo‘nalishdagi tashkilotlar esa jahonda katta miqdordagi aktivlarni boshqarmoqda. Islom moliyasining O‘zbekistondagi o‘rni qanday? Foizlarsiz foyda qayerdan kelmoqda? Nega bu sohaga talab ortib bormoqda? Ushbu savollar orqali yoritib berilgan.
Revisiting the buckling metrology method to determine the Young's modulus of 2D materials
Creators: name: Iguiñiz, Nestor
name: Frisenda, Riccardo
name: Bratschitsch, Rudolf
name: Castellanos-Gomez, Andres
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Measuring the mechanical properties of two-dimensional materials is a formidable task. While regular electrical and optical probing techniques are suitable even for atomically thin materials, conventional mechanical tests cannot be directly applied. Therefore, new mechanical testing techniques need to be developed. Up to now, the most widespread approaches require micro-fabrication to create freely suspended membranes, rendering their implementation complex and costly. Here, we revisit a simple yet powerful technique to measure the mechanical properties of thin films. The buckling metrology method, that does not require the fabrication of freely suspended structures, is used to determine the Young's modulus of several transition metal dichalcogenides (MoS2, MoSe2, WS2 and WSe2) with thicknesses ranging from 3 to 10 layers. We critically compare the obtained values for the Young's modulus and their uncertainty, finding that this simple technique provides results, which are in good agreement with those reported using other highly sophisticated testing methods. By comparing the cost, complexity and time required for the different methods reported in the literature, the buckling metrology method presents certain advantages that makes it an interesting mechanical test tool for 2D materials.
description: Main text: 3 figures, 2 tables. Supp Info: 11 figures, 2 tables. This is an author's version (post peer-review)
Some thoughts about nonequilibrium temperature
Creators: name: Garcia-Colin, L. S.
name: Micenmacher, V.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The main objective of this paper is to show that, within the present framework of the kinetic theoretical approach to irreversible thermodynamics, there is no evidence that provides a basis to modify the ordinary Fourier equation relating the heat flux in a non-equilibrium steady state to the gradient of the local equilibrium temperature. This fact is supported, among other arguments, through the kinetic foundations of generalized hydrodynamics. Some attempts have been recently proposed asserting that, in the presence of non-linearities of the state variables, such a temperature should be replaced by the non-equilibrium temperature as defined in Extended Irreversible Thermodynamics. In the approximations used for such a temperature there is so far no evidence that sustains this proposal.
description: 13 pages, TeX, no figures, to appear in Mol. Phys
Additional file 1: of Analysis of the role of thrombomodulin in all-trans retinoic acid treatment of coagulation disorders in cancer patients
Creators: name: Ghaffari, Hamed
name: Varner, Jeffrey
name: Petzold, Linda
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy
subject: Hematology

description: Detailed model description and supplementary results. (DOCX 330 kb)
Stress Tensor on Null Boundaries
Creators: name: Jafari, Ghadir
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Using the Brown-York prescription for the definition of quasilocal gravitational energy-momentum tensor on a boundary and also complete canonical structure on a null boundary which has been found recently \cite{Aghapour:2018icu}, we propose a similar stress tensor on the null boundary. Then we exploit this stress tensor to compute the quasi-local energy and angular momentum for some well-known gravitational solutions. We have found that in addition to reference spacetime method for regularizing total energy, in the case of null boundary we can add a possible counterterm so avoiding embedding difficulties.
description: 25 pages, 3 figures,new subsection dealing with null hyperfufaces in AAdS space,some new references have been added,version published in PRD
Anisotropy effects on the critical magnetic field in CaC$_{6}$ superconductor
Creators: name: Drzazga, Ewa A.
name: Wrona, Iza A.
name: Szczęśniak, Radosław
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The calcium intercalated graphite (CaC$_{6}$) is considered to be a representative material of the graphite intercalated superconductors, which exhibits sizable anisotropy of the Fermi surface (FS). Herein, the influence of the FS anisotropy on the critical magnetic field ($H_{C}$) in CaC$_{6}$ superconductor is comprehensively analyzed within the Migdal-Eliashberg (M-E) formalism. To precisely account for the mentioned anisotropy effects, the analysis is conducted in the framework of the six-band approximation, hitherto not employed for calculations of the $H_{C}$ function in CaC$_{6}$ material. For convenience, the obtained results are compared with the available one- and three-band estimates reported by using the M-E theory. A notable signatures of the increased number of bands are observed for the temperature dependent $H_{C}$ functions. In particular, the $H_{C}$ function decreases at T=0 K as the number of the considered bands is higher. Moreover, it is argued that the six-band formalism yields the most physically relevant shape of the $H_{C}$ function among all considered approximations. Therefore, the six-band model introduces not only quantitative but also qualitative changes to the results, in comparison to the other discussed FS approximations. This observation supports postulate that the six-band model constitutes minimal structure for FS of CaC$_{6}$, but also magnify importance of anisotropy effects for the critical magnetic field calculations.
Fluctuation broadening of plasma resonance line in the vortex liquid state of layered superconductors
Creators: name: Koshelev, A. E.
name: Bulaevskii, L. N.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The Josephson plasma resonance (JPR) provides a sensitive probe of vortex states in layered superconductors. We demonstrate that in the case of weak damping in the liquid phase, broadening of the JPR line is caused mainly by random Josephson coupling arising from the density fluctuations of pancake vortices. In this case the JPR line has the universal shape, which is determined only by parameters of the superconductors and temperature. This mechanism gives a natural explanation for the experimentally observed asymmetric lineshape. The tail at high frequencies arises due to mixing of the propagating plasma modes by random Josephson coupling, while the tail at small frequencies is caused by the localized plasma modes originating from a rare fluctuation suppression of the Josephson coupling in large areas.
description: RevTeX, 4 pages, 1 PS figure, Accepted to Phys. Rev. B, Rapid Communications
Additional file 2: of Calm in the midst of cytokine storm: a collaborative approach to the diagnosis and treatment of hemophagocytic lymphohistiocytosis and macrophage activation syndrome
Creators: name: Halyabar, Olha
name: Chang, Margaret
name: Schoettler, Michelle
name: Schwartz, Marc
name: Baris, Ezgi
name: Benson, Leslie
name: Biggs, Catherine
name: Gorman, Mark
name: Lehmann, Leslie
name: Lo, Mindy
name: Nigrovic, Peter
name: Platt, Craig
name: Priebe, Gregory
name: Rowe, Jared
name: Sundel, Robert
name: Surana, Neeraj
name: Weinacht, Katja
name: Mann, Alison
name: Yuen, Jenny
name: Meleedy-Rey, Patricia
name: Starmer, Amy
name: Taruna Banerjee
name: Dedeoglu, Fatma
name: Degar, Barbara
name: Hazen, Melissa
name: Henderson, Lauren
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Computational Biology

description: Table S2. EBG Workgroup Meetings and Topics. (DOCX 16 kb)
Towards low overhead magic state distillation
Creators: name: Krishna, Anirudh
name: Tillich, Jean-Pierre
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Magic state distillation is a resource intensive sub-routine for quantum computation. The ratio of noisy input states to output states with error rate at most $ε$ scales as $O(\log^γ(1/ε))$ (Bravyi and Haah, PRA 2012). In a breakthrough paper, Hastings and Haah (PRL 2018) showed that it is possible to construct distillation routines with sub-logarithmic overhead, achieving $γ\approx 0.6779$ and falsifying a conjecture that $γ$ is lower bounded by $1$. They then ask whether $γ$ can be made arbitrarily close to $0$. We answer this question in the affirmative for magic state distillation routines using qudits ($d$ dimensional quantum systems).
description: 4 + 3 pages, comments welcome
Semileptonic six fermion processes at future $e^+ e^-$ colliders: signal and irreducible background for top and WWZ physics
Creators: name: Accomando, Elena
name: Ballestrero, Alessandro
name: Pizzio, Marco
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute several total and differential cross sections relevant to top and WWZ physics at future $e^+e^-$ colliders taking into account the full set of Feynman diagrams for six fermion final states. We also include in our calculations initial state radiation and beamstrahlung effects, and the most important QCD corrections in an approximate (naive) form. We compare such a complete approach with "production x decay" approximation and we suggest that in many physical studies the former is needed.
description: 28 pages including 8 figures (7 ps). Latex. Uses Axodraw. Minor changes and some typos corrected
Adding new branches to the "Christmas tree" of the quasinormal spectrum of black branes
Creators: name: Grozdanov, Sašo
name: Starinets, Andrei O.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In holography, quasinormal spectra of black branes coincide with the poles of retarded finite-temperature correlation functions of a dual quantum field theory in the limit of infinite number of relevant degrees of freedom such as colours. For asymptotically anti-de Sitter backgrounds, the spectra form a characteristic pattern in the complex frequency plane, colloquially known as the "Christmas tree". At infinite coupling, the tree has only one pair of branches. At large but finite coupling, the branches become more dense and lift up towards the real axis, consistent with the expectation of forming a branch cut in the limit of zero coupling. However, it is known that at zero coupling, the corresponding correlators generically have not one but multiple branch cuts separated by intervals proportional to the Matsubara frequency. This suggests the existence of multiple branches of the "Christmas tree" spectrum in dual gravity. In this note, we show numerically how these additional branches of the spectrum can emerge from the dual gravitational action with higher-derivative terms. This phenomenon appears to be robust, yet, reproducing the expected weak coupling behaviour of the correlators quantitatively implies the existence of certain constraints on the coefficients of the higher-derivative terms of the dual gravity theory.
description: V2: 13 pages, 8 figures. Version to appear in JHEP
Additional file 1: of Calm in the midst of cytokine storm: a collaborative approach to the diagnosis and treatment of hemophagocytic lymphohistiocytosis and macrophage activation syndrome
Creators: name: Halyabar, Olha
name: Chang, Margaret
name: Schoettler, Michelle
name: Schwartz, Marc
name: Baris, Ezgi
name: Benson, Leslie
name: Biggs, Catherine
name: Gorman, Mark
name: Lehmann, Leslie
name: Lo, Mindy
name: Nigrovic, Peter
name: Platt, Craig
name: Priebe, Gregory
name: Rowe, Jared
name: Sundel, Robert
name: Surana, Neeraj
name: Weinacht, Katja
name: Mann, Alison
name: Yuen, Jenny
name: Meleedy-Rey, Patricia
name: Starmer, Amy
name: Taruna Banerjee
name: Dedeoglu, Fatma
name: Degar, Barbara
name: Hazen, Melissa
name: Henderson, Lauren
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: 60506 Virology

description: Table S1. HLH/MAS EBG Workgroup Members. (DOCX 14 kb)
Opposite-sign Dilepton Asymmetry of Neutral B Decays: a Probe of New Physics from CPT or ΔB = ΔQ Violation
Creators: name: Xing, Zhi-zhong
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We show that new physics, either from CPT violation in B^0-\bar{B}^0 mixing or from ΔB = -ΔQ transitions, may lead to an opposite-sign dilepton asymmetry of neutral B-meson decays. Both effects have the same time-dependent behavior and therefore are in general indistinguishable from each other. We also clarify some ambiguity associated with the constraint on CPT violation in semileptonic decays of incoherent B^0 and \bar{B}^0 mesons.
description: 9 pages. Some changes. Phys. Lett. B (in printing)