cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
STM/STS Study on 4a X 4a Electronic Charge Order of Superconducting Bi2Sr2CaCu2O8+d
Creators: name: Momono, N.
name: Hashimoto, A.
name: Kobatake, Y.
name: Oda, M.
name: Ido, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We performed low-bias STM measurements on underdoped Bi2212 crystals, and confirmed that a two-dimensional (2D) superstructure with a periodicity of four lattice constants (4a) is formed within the Cu-O plane at T
description: 4 pages, submitted to J. Phys. Soc. Jpn
Directed flow as a phase transition signal in relativistic heavy ion collisions
Creators: name: Steinheimer, J.
name: Auvinen, J.
name: Petersen, H.
name: Bleicher, M.
name: Stöcker, H.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Fully spin-dependent transport of triangular graphene flakes
Creators: name: Ono, Tomoya
name: Ota, Tadashi
name: Egami, Yoshiyuki
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The magnetic moment and spin-polarized electron transport properties of triangular graphene flakes surrounded by boron nitride sheets (BNC structures) are studied by using first-principles calculations based on density functional theory. Their dependence on the BNC structure is discussed, revealing that small isolated graphene flakes have large magnetic moment. When the BNC structure is suspended between graphene electrodes, the spin-polarized charge density distribution accumulates at the edge of the graphene flakes and no spin polarization is observed in the graphene electrodes. We also found that the BNC structure demonstrates perfectly spin-polarized transport properties in the wide energy window around the Fermi level. Our first-principles results indicate that the BNC structure provides new possibilities to electrically control spin.
First-principles transport calculation method based on real-space finite-difference nonequilibrium Green's function scheme
Creators: name: Ono, Tomoya
name: Egami, Yoshiyuki
name: Hirose, Kikuji
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrate an efficient nonequilibrium Green's function transport calculation procedure based on the real-space finite-difference method. The direct inversion of matrices for obtaining the self-energy terms of electrodes is computationally demanding in the real-space method because the matrix dimension corresponds to the number of grid points in the unit cell of electrodes, which is much larger than that of sites in the tight-binding approach. The procedure using the ratio matrices of the overbridging boundary-matching technique [Phys. Rev. B {\bf 67}, 195315 (2003)], which is related to the wave functions of a couple of grid planes in the matching regions, greatly reduces the computational effort to calculate self-energy terms without losing mathematical strictness. In addition, the present procedure saves computational time to obtain Green's function of the semi-infinite system required in the Landauer-Büttiker formula. Moreover, the compact expression to relate Green's functions and scattering wave functions, which provide a real-space picture of the scattering process, is introduced. An example of the calculated results is given for the transport property of the BN ring connected to (9,0) carbon nanotubes. The wave function matching at the interface reveals that the rotational symmetry of wave functions with respect to the tube axis plays an important role in electron transport. Since the states coming from and going to electrodes show threefold rotational symmetry, the states in the vicinity of the Fermi level, whose wave function exhibits fivefold symmetry, do not contribute to the electron transport through the BN ring.
description: 34 pages
First-principles calculation of scattering potentials of Si-Ge and Sn-Ge dimers on Ge(001) surfaces
Creators: name: Ono, Tomoya
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The scattering potential of the defects on Ge(001) surfaces is investigated by first-principles methods. The standing wave in the spatial map of the local density of states obtained by wave function matching is compared to the image of the differential conductance measured by scanning tunneling spectroscopy. The period of the standing wave and its phase shift agree with those in the experiment. It is found that the scattering potential becomes a barrier when the electronegativity of the upper atom of the dimer is larger than that of the lower atom, while it acts as a well in the opposite case.
description: to be published in Phys. Rev. B
Electron-transport properties of ethyne-bridged diphenyl zinc-porphyrin molecules
Creators: name: Nguyen, Huy Duy
name: Ono, Tomoya
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the electron-transport properties of ethyne-bridged diphenyl zinc-porphyrin molecules suspended between gold (111) electrodes by first-principles calculations within the framework of density functional theory. It is found that the conductance of a molecular junction in which phenyl and porphyrin rings are perpendicular is reduced by three orders of magnitude compared with that of a junction in which the phenyl and porphyrin rings are coplanar. In the coplanar configuration, electrons are transmitted through $π$ states, which extend over the whole molecule. In the perpendicular configuration, the conductance is suppressed because of the reduction of electron hopping between $π$ states of the phenyl ring and $σ$ states of the porphyrin ring.
description: 11 pages
The Influence of Large-Scale Structure on Halo Shapes and Alignments
Creators: name: Altay, G.
name: Colberg, J. M.
name: Croft, R. A. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Alignments of galaxy clusters (the Binggeli effect), as well as of galaxies themselves have long been studied both observationally and theoretically. Here we test the influence of large-scales structures and tidal fields on the shapes and alignments of cluster-size and galaxy-size dark matter halos. We use a high-resolution N-body simulation of a $Λ$CDM universe, together with the results of Colberg et al. (2005), who identified filaments connecting pairs of clusters. We find that cluster pairs connected by a filament are strongly aligned with the cluster-cluster axis, whereas unconnected ones are not. For smaller, galaxy-size halos, there also is an alignment signal, but its strength is independent of whether the halo is part of an obvious large-scale structure. Additionally, we find no measureable dependence of galaxy halo shape on membership of a filament. We also quantify the influence of tidal fields and find that these do correlate strongly with alignments of halos. The alignments of most halos are thus caused by tidal fields, with cluster-size halos being strongly aligned through the added mechanism of infall of matter from filaments.
description: 8 pages, 6 figures, accepted for publication in MNRAS
Dileptons in heavy-ion collisions in a coarse-grained transport approach
Creators: name: Endres, S.
name: Van Hees, H.
name: Weil, J.
name: Bleicher, M.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Expectation thinning operators based on linear fractional probability generating functions
Creators: name: Aly, Emad-Eldin A. A.
name: Bouzar, Nadjib
Publisher: name: arXiv
Year: 2017
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60E05 60E10 62M10

description: We introduce a two-parameter expectation thinning operator based on a linear fractional probability generating function. The operator is then used to define a first-order integer-valued autoregressive \inar1 process. Distributional properties of the \inar1 process are described. We revisit the Bernoulli-geometric \inar1 process of Bourguignon and Weiß (2017) and we introduce a new stationary \inar1 process with a compound negative binomial distribution. Lastly, we show how a proper randomization of our operator leads to a generalized notion of monotonicity for distributions on \bzp.
Geometrical Proof of Generalized Mirror Transformation of Projective Hypersurfaces
Creators: name: Jinzenji, Masao
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 14J33, 14N35

description: In this paper, we propose a geometrical proof of the generalized mirror transformation of genus 0 Gromov-Witten invariants of degree k hypersurface in CP^{N-1}.
description: 14 pages, final version accepted for publication in International Journal of Mathematics. arXiv admin note: text overlap with arXiv:1006.0607
A puzzles in the direct photon production
Creators: name: Linnyk, O.
name: Cassing, W.
name: Bratkovskaya, E.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
A New Radio Detection of the Bursting Source GCRT J1745-3009
Creators: name: Hyman, Scott D.
name: Lazio, T. Joseph W.
name: Roy, Subhashis
name: Ray, Paul S.
name: Kassim, Namir E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: GCRT J1745-3009 is a transient bursting radio source located in the direction of the Galactic center, discovered in 330 MHz VLA observations from 2002 September 30--October 1 by Hyman et al. We have searched for bursting activity from GCRT J1745-3009 in nearly all of the available 330 MHz VLA observations of the Galactic center since 1989 as well as in 2003 GMRT observations. We report a new radio detection of the source in 330 MHz GMRT data taken on 2003 September 28. A single ~0.5 Jy burst was detected, approximately 3x weaker than the five bursts detected in 2002. Due to the sparse sampling of the 2003 observation, only the decay portion of a single burst was detected. We present additional evidence indicating that this burst is an isolated one, but we cannot completely rule out additional undetected bursts that may have occured with the same ~77 min. periodicity observed in 2002 or with a different periodicity. Assuming the peak emission was detected, the decay time of the burst, ~2 min, is consistent with that determined for the 2002 bursts. Based on the total time for which we have observations, we estimate that the source has a duty cycle of roughly 10%.
description: 16 pages including 4 figures. Submitted to The Astrophysical Journal
Herms, Eilert, Ringleben, Joachim: Vergessene Theologen des 19. und frühen 20. Jahrhunderts
Creators: name: Krüger, Hanfried
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 34 Nr. 2 (1985): Ökumenische Rundschau, Band 34, Heft 2
Comparison results for solutions to p-Laplace equations with Robin boundary conditions
Creators: name: Amato, Vincenzo
name: Gentile, Andrea
name: Masiello, Alba Lia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J92, 35P15

description: In the last decades comparison results of Talenti type for Elliptic Problems with Dirichlet boundary conditions have been widely investigated. In this paper, we generalize the results obtained in arXiv:1909.11950 to the case of p-Laplace operator with Robin boundary conditions. The point-wise comparison, obtained in arXiv:1909.11950 only in the planar case, holds true in any dimension if p is sufficiently small.
Epstein-Zin Utility Maximization on a Random Horizon
Creators: name: Aurand, Joshua
name: Huang, Yu-Jui
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: Optimization and Control (math.OC)
subject: FOS: Economics and business
subject: FOS: Mathematics
subject: 93E20, 91G10

description: This paper solves the consumption-investment problem under Epstein-Zin preferences on a random horizon. In an incomplete market, we take the random horizon to be a stopping time adapted to the market filtration, generated by all observable, but not necessarily tradable, state processes. Contrary to prior studies, we do not impose any fixed upper bound for the random horizon, allowing for truly unbounded ones. Focusing on the empirically relevant case where the risk aversion and the elasticity of intertemporal substitution are both larger than one, we characterize the optimal consumption and investment strategies using backward stochastic differential equations with superlinear growth on unbounded random horizons. This characterization, compared with the classical fixed-horizon result, involves an additional stochastic process that serves to capture the randomness of the horizon. As demonstrated in two concrete examples, changing from a fixed horizon to a random one drastically alters the optimal strategies.
Gluon-Induced Weak Boson Fusion
Creators: name: Harlander, Robert
name: Vollinga, Jens
name: Weber, Marcus
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The gluon-gluon induced terms for Higgs production through weak boson fusion (WBF) are computed. Formally, these are of NNLO in the strong coupling constant. This is the lowest order at which non-zero color exchange occurs between the scattering quarks, leading to a color field and thus additional hadronic activity between the outgoing jets. Using a minimal set of cuts, the numerical impact of these terms is at the percent level with respect to the NLO rate for weak boson fusion. Applying the so-called WBF cuts leads to an even stronger suppression, so that we do not expect a significant deterioration of the WFB signal by these color exchange effects.
description: 9 pages, 8 figures (21 included ps- and eps-files)
PechaKucha Rubric and Tip Sheet
Creators: name: Warmuth, Kelly
Publisher: name: figshare
Year: 2021
Subjects: Developmental and Educational Psychology

description: This rubric and tip sheet--created by Kelly Warmuth--help students and instructors who intend to present a PechaKucha presentation using PowerPoint. Although this assignment was created originally for the psychology classroom, it can easily be modified for any number of disciplines where high-quality student presentations are assigned and expected.
Multi-sphere approximation of realistic particles with a combined 3D thinning and greedy algorithm
Creators: name: Yuan, Fei-Liang
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: This article is the updated version of the paper: "Combined 3D thinning and greedy algorithm to approximate realistic particles with corrected mechanical properties, Granular Matter (2019)" by the first author [58]. The main changes here are (1) a recently developed DEM code Rigid3D is used for the DEM simulations, instead of the open-source software LIGGGHTS in the original work; (2) three new validation tests were carried out.
 The main idea of this work is to combine the 3D thinning and greedy set-covering algorithms for the approximation of realistic particles with multiple spheres. First, the particle's medial surface (or surface skeleton), from which all candidate (maximal inscribed) spheres can be generated, is computed by the topological 3D thinning algorithm. Then, the clump generation procedure is converted into a greedy set-covering problem. The advantage of this approach over previous studies is that, with a given particle media surface and a grid resolution for the discretized particle, a minimum number of component (or primary) spheres for an MS particle is guaranteed for a maximum volume coverage, thanks to the combined algorithm. To correct the mass distribution of an MS particle due to the highly overlapped component spheres, linear programming (LP) is used to adjust the density of each component sphere, such that the aggregate properties such as mass, center of mass, and inertia tensor are identical or close enough to the prototypical particle. We then demonstrate the capability of the combined algorithm to approximate simple to complex particle shapes in three test cases: (1) particle-wall contact; (2) particle settling; and (3) granular flow in a rotating drum.
description: Upgraded version: DEM simulations were carried out by Rigid3D developed by the author, rather than LIGGGHTS in the original paper
Three-flavor collective neutrino conversions with multi-azimuthal-angle instability in an electron-capture supernova model
Creators: name: Zaizen, Masamichi
name: Horiuchi, Shunsaku
name: Takiwaki, Tomoya
name: Kotake, Kei
name: Yoshida, Takashi
name: Umeda, Hideyuki
name: Cherry, John F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the multi-azimuthal angle (MAA) effect on collective neutrino oscillation by considering the three-dimensional neutrino momentum distribution in a realistic electron-capture supernova model with an $8.8 M_{\odot}$ progenitor. We find that the MAA effect induces collective flavor conversions at epochs when it is completely suppressed under the axial-symmetric approximation. This novel activity is switched on/off by the growth of the MAA instability and imprints additional time evolution in the expected neutrino event rate. We validate our results by extending the linear stability analysis into the three-flavor scheme including mixing angles, and confirm that the onset of collective neutrino oscillation matches the steep growth of flavor instability. We discuss how the MAA effect alters neutrino detection at Super-Kamiokande and DUNE.
description: 15 pages with 28 figures, Version accepted in Phys. Rev. D
Molekulardynamische Simulation von Quecksilber in wässrigen NaCl-Lösungen
Creators: name: Giessmann, Robert T.
Publisher: name: Zenodo
Year: 2013
Subjects: molecular dynamics
simulation
mercury

description: Arbeit zur Erlangung des akademischen Grades Bachelor of Science Bearbeitungszeitraum: 27. Mai bis 29. Juli 2013 Gutachter: Prof. Dr. Ralf Ludwig Zweitgutachter: Dr. Dietmar Paschek In der vorliegenden Arbeit werden die Wirkung von Salinität und Temperatur auf das Lösungs- und Diffusionsverhalten von Quecksilber in wässrigen Natriumchloridlösungen untersucht. Zur Ermittlung der physikalischen Eigenschaften wie Dynamik und Löslich- keit wurden molekulardynamische Simulationen durchgeführt und ausgewertet. Ergebnis der Betrachtungen sind einfach anwendbare Gleichungen für thermodynami- sche Größen wie die freie Solvatationsenergie und die Henrykonstante sowie Erkenntnisse über den Einfluss von Quecksilber-, Salzkonzentration und die Verwendung verbesserter Potentialmodelle für die Beschreibung des gelösten NaCl. Es werden anhand experimenteller Daten für die Löslichkeit von Quecksilber in reinem Wasser optimierte Lennard-Jones-Parameter für die Simulation von gelöstem Quecksil- ber in wässrigen Medien vorgeschlagen.
An Evaluation of Elastizell Concrete as a Lightweight Fill Material
Creators: name: Allen, David L.
name: Meade, Bobby W.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1984
Subjects: subject: Transportation Engineering

description: Near Northern Kentucky University in Campbell County, Kentucky, access ramps connecting I 275 and 3-Mile Road (shown in Figure 1) were constructed. During construction of those ramps, additional embankments were to be placed on an existing 6-foot by 5-foot box culvert. Both ramps, hereafter referred to as NKU-1 (the exit ramp from I 275) and NKU-2 (the entrance ramp to I 275), cross the culvert. The new embankments would result in fill heights, over the culvert of 30 feet at Station 39+14 of NKU-1 (Figure 2) and 47 feet at Station 11+68 of NKU-2 (Figure 3). The original fill height was approximately 11 feet at NKU-1 and 29 feet at NKU-2. With the use of conventional fill material, loading on the culvert would exceed that which the structure was designed to support. To avoid replacing the existing culvert, a lightweight fill material was needed.  Elastizell lightweight concrete was chosen for construction of the embankments. This concrete is made by blending a preformed Elastizell foam with a cement-water slurry. The resulting fluid forms a discrete cellular concrete that may be placed at densities as low as 20 pounds per cubic foot with a relatively high compressive strength. Elastizell concrete is identified by class and, generally, a lower class indicates a lower density. Because the material is a thin liquid, it may readily be pumped through hoses from the mixing equipment into formed basins (Figure 4). Some common applications for low-density concrete are: roof fills, thermal insulation, fire protection, and stabilizing fills.  This study was performed to determine the engineering properties of this material during and after placement, observe construction procedures for placing the material, and to evaluate its performance as a lightweight fill material.
The Darboux Transformation and Exactly Solvable Cosmological Models
Creators: name: Yurov, A. V.
name: Vereshchagin, S. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a simple and effective method for constructing exactly solvable cosmological models containing inflation with exit. This method does not involve any parameter fitting. We discuss the problems arising with solutions that violate the weak energy condition.
description: 10 pages, 6 figures, RevTex
Reaching Consensus Under a Deadline
Creators: name: Bannikova, Marina
name: Dery, Lihi
name: Obraztsova, Svetlana
name: Rabinovich, Zinovi
name: Rosenschein, Jeffrey S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Committee decisions are complicated by a deadline, e.g., the next start of a budget, or the beginning of a semester. In committee hiring decisions, it may be that if no candidate is supported by a strong majority, the default is to hire no one - an option that may cost dearly. As a result, committee members might prefer to agree on a reasonable, if not necessarily the best, candidate, to avoid unfilled positions. In this paper, we propose a model for the above scenario - Consensus Under a Deadline (CUD)- based on a time-bounded iterative voting process. We provide convergence guarantees and an analysis of the quality of the final decision. An extensive experimental study demonstrates more subtle features of CUDs, e.g., the difference between two simple types of committee member behavior, lazy vs.~proactive voters. Finally, a user study examines the differences between the behavior of rational voting bots and real voters, concluding that it may often be best to have bots play on the voters' behalf.
Analysis of Loads and Settlements for Reinforced Concrete Culverts
Creators: name: Allen, David L.
name: Meade, Bobby W.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1984
Subjects: subject: Transportation Engineering

description: Three primary factors in considering the loads on, and therefore the design of, underground conduits are: bedding conditions, trench configuration, and use of the "imperfect trench." Models of varied conditions are analyzed using a finite element program and the results compared to data obtained at instrumented sites of similar conditions. Presented herein are charts developed from these analyses which will facilitate future design of culverts. Also presented are recommendations for design criteria and construction procedures.
$H$-convergence for equations depending on monotone operators in Carnot groups
Creators: name: Maione, Alberto
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: Let $Ω$ be an open and bounded subset of a Carnot Group $\mathbb{G}$ and $2\leq p<\infty$. In this paper we present some results related to the convergence of solutions of Dirichlet problems for sequences of monotone operators. The aim of this paper is to give a generalization of well-known results of Tartar, De Arcangelis-Serra Cassano and Baldi-Franchi-Tchou-Tesi in more general frameworks.
DAFNE+ exploitation & business plan
Creators: name: Lupova-Henry, Evgeniya
name: Martinez Vicente, Elena
name: Tenorio Fornés, Ámbar
name: Melissari, Filisia
name: Vinet, Hugues
name: Fernández-Cedrón, Iago
name: Bosco, Ferdinando
name: Trevisan, Olga
name: Jackson, David
Publisher: name: Zenodo
Year: 2025

description: Description of current ecosystem and expected business plan of DAFNE+.
Overhaul and Installation of the ICARUS-T600 Liquid Argon TPC Electronics for the FNAL Short Baseline Neutrino Program
Creators: name: Bagby, L.
name: Baibussinov, B.
name: Behera, B.
name: Bellini, V.
name: Benocci, R.
name: Betancourt, M.
name: Bettini, M.
name: Bonesini, M.
name: Boone, T.
name: Braggiotti, A.
name: Brown, J. D.
name: Budd, H.
name: Calaon, F.
name: Castellani, L.
name: Centro, S.
name: Cocco, A. G.
name: Convery, M.
name: Fabris, F.
name: Falcone, A.
name: Farnese, C.
name: Fava, A.
name: Fichera, F.
name: Giarin, M.
name: Gibin, D.
name: Guglielmi, A.
name: Guida, R.
name: Hilgenberg, C.
name: Howard, B.
name: Ketchum, W.
name: Marchini, S.
name: Menegolli, A.
name: Meng, G.
name: Montanari, C.
name: Mooney, M.
name: Granados, G. Moreno
name: Mueller, J.
name: Nessi, M.
name: Nicoletto, M.
name: Pedrotta, R.
name: Peghin, R.
name: Petrillo, G.
name: Pietropaolo, F.
name: Rampazzo, G.
name: Rappoldi, A.
name: Raselli, G. L.
name: Rossella, M.
name: Rubbia, C.
name: Scaramelli, A.
name: Sergiampietri, F.
name: Spanu, M.
name: Torretta, D.
name: Torti, M.
name: Tortorici, F.
name: Tsai, Y. T.
name: Turcato, M.
name: Varanini, F.
name: Ventura, S.
name: Vercellati, F.
name: Vignoli, C.
name: Warner, D.
name: Wilson, R. J.
name: Worcester, M.
name: Zani, A.
name: Zatti, P. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The ICARUS T600 liquid argon (LAr) time projection chamber (TPC) underwent a major overhaul at CERN in 2016-2017 to prepare for the operation at FNAL in the Short Baseline Neutrino (SBN) program. This included a major upgrade of the photo-multiplier system and of the TPC wire read-out electronics. The full TPC wire read-out electronics together with the new wire biasing and interconnection scheme are described. The design of a new signal feed-through flange is also a fundamental piece of this overhaul whose major feature is the integration of all electronics components onto the signal flange. Initial functionality tests of the full TPC electronics chain installed in the T600 detector at FNAL are also described.
Hölder regularity for the spectrum of translation flows
Creators: name: Bufetov, Alexander I.
name: Solomyak, Boris
Publisher: name: arXiv
Year: 2019
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37Axx, 37Dxx

description: The paper is devoted to generic translation flows corresponding to Abelian differentials on flat surfaces of arbitrary genus $g\ge 2$. These flows are weakly mixing by the Avila-Forni theorem. In genus 2, the Hölder property for the spectral measures of these flows was established in our papers [10,12]. Recently Forni [17], motivated by [10], obtained Hölder estimates for spectral measures in the case of surfaces of arbitrary genus. Here we combine Forni's idea with the symbolic approach of [10] and prove Hölder regularity for spectral measures of flows on random Markov compacta, in particular, for translation flows in all genera.
description: Corrects the formulation of Proposition 5.4 in the published version (reversed order of quantifiers); the results and proofs are unchanged, with a minor rewording
Haloes of k-Essence
Creators: name: Armendariz-Picon, C.
name: Lim, Eugene A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study gravitationally bound static and spherically symmetric configurations of k-essence fields. In particular, we investigate whether these configurations can reproduce the properties of dark matter haloes. The classes of Lagrangians we consider lead to non-isotropic fluids with barotropic and polytropic equations of state. The latter include microscopic realizations of the often-considered Chaplygin gases, which we find can cluster into dark matter halo-like objects with flat rotation curves, while exhibiting a dark energy-like negative pressure on cosmological scales. We complement our studies with a series of formal general results about the stability and initial value formulation of non-canonical scalar field theories, and we also discuss a new class of de Sitter solutions with spacelike field gradients.
description: 34pages, single column double spacing, 7 figures, 3 Tables, RevTex4. Additional references and minor clarifications. To be submitted to JCAP
Baadte, Günter, Boyens, Armin, Buchbender, Ortwin: Frieden stiften
Creators: name: Hd.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 34 Nr. 2 (1985): Ökumenische Rundschau, Band 34, Heft 2
Exterior square gamma factors for cuspidal representations of $\mathrm{GL}_n$: simple supercuspidal representations
Creators: name: Ye, Rongqing
name: Zelingher, Elad
Publisher: name: arXiv
Year: 2019
Subjects: subject: Representation Theory (math.RT)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 22E50, 11F66

description: We compute the local twisted exterior square gamma factors for simple supercuspidal representations, using which we prove a local converse theorem for simple supercuspidal representations.
description: 27 pages. Comments are welcome. v2: This version contains all changes that were made for the Ramanujan Journal submission
Competing magnetic interactions in the extended Kagome system YBaCo4O7
Creators: name: Chapon, L. C.
name: Radaelli, P. G.
name: Zheng, H.
name: Mitchell, J. F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: YBaCo4O7 belongs to a new class of geometrically frustrated magnets like the pyrochlores, in which Co-spins occupy corners of tetrahedra. The structure can be viewed as an alternating stacking of Kagome and triangular layers. Exactly half of the triangular units of the Kagome plane are capped by Co ions to form columns running perpendicular to the Kagome sheets. Neutron powder diffraction reveals a broad temperature range of diffuse magnetic scattering, followed by long range magnetic ordering below 110K. A unique low-temperature magnetic structure simultaneously satisfies an S=0 arrangement in the uncapped triangular units and antiferromagnetic coupling along the columns. A spin reorientation above 30K tracks the relative strengths of the in-plane and out-of-plane interactions.
Universal nonlinear infection kernel from heterogeneous exposure on higher-order networks
Creators: name: St-Onge, Guillaume
name: Sun, Hanlin
name: Allard, Antoine
name: Hébert-Dufresne, Laurent
name: Bianconi, Ginestra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: The colocation of individuals in different environments is an important prerequisite for exposure to infectious diseases on a social network. Standard epidemic models fail to capture the potential complexity of this scenario by (1) neglecting the higher-order structure of contacts which typically occur through environments like workplaces, restaurants, and households; and by (2) assuming a linear relationship between the exposure to infected contacts and the risk of infection. Here, we leverage a hypergraph model to embrace the heterogeneity of environments and the heterogeneity of individual participation in these environments. We find that combining heterogeneous exposure with the concept of minimal infective dose induces a universal nonlinear relationship between infected contacts and infection risk. Under nonlinear infection kernels, conventional epidemic wisdom breaks down with the emergence of discontinuous transitions, super-exponential spread, and hysteresis.
description: 21 pages, 9 figures
Low-temperature statistical mechanics of the QuanTizer problem: fast quenching and equilibrium cooling of the three-dimensional Voronoi Liquid
Creators: name: Hain, Tobias M.
name: Klatt, Michael A.
name: Schröder-Turk, Gerd E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The Quantizer problem is a tessellation optimisation problem where point configurations are identified such that the Voronoi cells minimise the second moment of the volume distribution. While the ground state (optimal state) in 3D is almost certainly the body-centered cubic lattice, disordered and effectively hyperuniform states with energies very close to the ground state exist that result as stable states in an evolution through the geometric Lloyd's algorithm [Klatt et al. Nat. Commun., 10, 811 (2019)]. When considered as a statistical mechanics problem at finite temperature, the same system has been termed the 'Voronoi Liquid' by [Ruscher et al. EPL 112, 66003 (2015)]. Here we investigate the cooling behaviour of the Voronoi liquid with a particular view to the stability of the effectively hyperuniform disordered state. As a confirmation of the results by Ruscher et al., we observe, by both molecular dynamics and Monte Carlo simulations, that upon slow quasi-static equilibrium cooling, the Voronoi liquid crystallises from a disordered configuration into the body-centered cubic configuration. By contrast, upon sufficiently fast non-equilibrium cooling (and not just in the limit of a maximally fast quench) the Voronoi liquid adopts similar states as the effectively hyperuniform inherent structures identified by Klatt et al. and prevents the ordering transition into a BCC ordered structure. This result is in line with the geometric intuition that the geometric Lloyd's algorithm corresponds to a type of fast quench.
description: 11 pages, 6 figures
The marriage problem: from the bar of appointments to the agency
Creators: name: Lage-Castellanos, Alejandro
name: Mulet, Roberto
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the stable marriage problem from different points of view. We proposed a microscopic dynamic that lead the system to a stationary state that we are able to characterize analytically. Then, we derive a thermodynamical description of the Nash equilibrium states of the system that agree very well with the results of Monte Carlo simulations. Finally, through large scale numerical simulations we compare the Global Optimum of the society with the stable marriage of lower energy. We showed that both states are strongly correlated and that the selffish attitude results in a benefit for most of the practitioners belonging to blocking pairs in the Global Optimum of the society.
description: 15 pages, 9 figures. To be published in Physica A (2005)
In-gap states and strain-tuned band convergence in layered structure trivalent iridate K0.75Na0.25IrO2
Creators: name: Gong, Xujia
name: Autieri, Carmine
name: Zhou, Huanfu
name: Ma, Jiafeng
name: Tang, Xin
name: Zheng, Xiaojun
name: Ming, Xing
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Iridium oxides (iridates) provide a good platform to study the delicate interplay between spin-orbit coupling (SOC) interactions, electron correlation effects, Hund's coupling and lattice degree of freedom. However, overwhelming investigations primarily focus on tetravalent (Ir4+, 5d5) and pentavalent (Ir5+, 5d4) iridates, far less attention has been paid to iridates with other valence states. Here, we pay our attention to a less-explored trivalent (Ir3+, 5d6) iridates, K0.75Na0.25IrO2, crystalizing in a triangular lattice with edge-sharing IrO6 octahedra and alkali metal ions intercalated [IrO2]- layers. We theoretically determine the preferred occupied positions of the alkali metal ions from energetic viewpoints and reproduce the experimentally observed semiconducting behavior and nonmagnetic (NM) properties. The SOC interactions play a critical role in the band dispersion, resulting in NM Jeff = 0 states. More intriguingly, our electronic structure not only uncovers the presence of in-gap states and explains the abnormal low activation energy in K0.75Na0.25IrO2, but also predicts the band edge can be effectively modulated by mechanical strain. Especially, the in-gap states feature with enhanced band-convergence characteristics by 6% compressive strain, which will greatly enhance the electrical conductivity of K0.75Na0.25IrO2. Present work sheds new lights on the unconventional electronic structures of the trivalent iridates, indicating its promising application as nanoelectronic and thermoelectric material.
description: 17pages,8figures
Lohse, Eduard, Wilckens, Ulrich: Gottes Friede den Völkern
Creators: name: Hd.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 34 Nr. 2 (1985): Ökumenische Rundschau, Band 34, Heft 2
Globular Cluster Systems of Relic Galaxies
Creators: name: Alamo-Martínez, Karla A.
name: Chies-Santos, Ana L.
name: Beasley, Michael A.
name: Flores-Freitas, Rodrigo
name: Furlanetto, Cristina
name: Trevisan, Marina
name: Schnorr-Müller, Allan
name: Leaman, Ryan
name: Bonatto, Charles J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyse the globular cluster (GC) systems of a sample of 15 massive, compact early-type galaxies (ETGs), 13 of which have already been identified as good relic galaxy candidates on the basis of their compact morphologies, old stellar populations and stellar kinematics. These relic galaxy candidates are likely the nearby counterparts of high redshift red nugget galaxies. Using F814W (~I) and F160W (~H) data from the WFC3 camara onboard the Hubble Space Telescope we determine the total number, luminosity function, specific frequency, colour and spatial distribution of the GC systems. We find lower specific frequencies (SN<2.5 with a median of SN=1) than ETGs of comparable mass. This is consistent with a scenario of rapid, early dissipative formation, with relatively low levels of accretion of low-mass, high-SN satellites. The GC half-number radii are compact, but follow the relations found in normal ETGs. We identify an anticorrelation between the specific angular momentum (lambda_R) of the host galaxy and the (I-H) colour distribution width of their GC systems. Assuming that lambda_R provides a measure of the degree of dissipation in massive ETGs, we suggest that the (I-H) colour distribution width can be used as a proxy for the degree of complexity of the accretion histories in these systems.
description: MNRAS accepted
Composite sol-gel ceramics
Creators: name: Yang, Quanzu
Publisher: name: University of British Columbia
Year: 2009

description: The fundamental goal of the present study was to develop an understanding of the mechanisms of dispersion, gelation, drying, interfacial bonding and densification of composite sol-gel (CSG) ceramics. The general applied objective was to fabricate high performance CSG ceramics and to produce novel, non-permeable, adherent CSG coatings on stainless steel substrates for high temperature corrosion and wear protection. The properties of the alumina sols and C S G were studied by measuring viscosity, conductivity, ionic strength, and pH of the sol. The dispersion and stability of ceramic particles in alumina sols were investigated by measuring particle size distributions, measuring zeta potentials, and calculating the interaction energy according to DLVO theory. The CSG technology has been developed to fabricate high performance engineering composite ceramics and coatings through dispersing ceramic fillers (alumina, zirconia, SiC) into alumina sols, gelcasting, drying, and pressureless sintering. A sintering model for CSG was developed and validated by experiment results. The model was then used successfully to predict sinterability and to optimize the processing technologies of CSG. The research results indicate that hydrated alumina sols can be used as a sintering and dispersion additive for alumina-based ceramics. The sol-gel matrix provides fast diffusion paths for mass transport during sintering CSG. Dispersion of alumina and SiC particles is substantially improved in alumina sols, as compared to pure water of similar acidity, e.g. the average agglomerate size is decreased by at least 50%. For alumina/alumina CSG ceramics sintered at 1400 °C, the microhardness is 20 GPa and porosity is less than 1 vol%. The CSG composite with composition of 50vol%SiC-50vol%Al2O3 has been sintered successfully to full densification and microhardness of 22.9 GPa. A novel process for ceramic coatings on the metallic substrates has been developed successfully by combining chemical bonding and CSG technologies. Nonpermeable, crack-free, thick ceramic coatings (2-600 μm) on the substrates were fabricated by spraying and dipping, followed by low temperature (500 - 600 °C) sintering. The correlations between the processing methods, microstructure, and mechanical properties of CSG coatings were investigated by varying the preparation methods, studying morphology, and measuring mechanical properties of the ceramics. The chemically bonded CSG coatings have the best performance. The bonding strength between the substrates and coatings is about 42 MPa, and the surface microhardness of the coatings is about 6.5 GPa.
On The Origin of Very High Energy Cosmic Rays
Creators: name: Blasi, Pasquale
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the most recent developments in our understanding of the acceleration and propagation of cosmic rays up to the highest energies. In particular we specialize our discussion to three issues: 1) developments in the theory of particle acceleration at shock waves; 2) the transition from galactic to extragalactic cosmic rays; 3) implications of up-to-date observations for the origin of ultra high energy cosmic rays (UHECRs).
description: Invited Review Article to appear in Modern Physics Letters A, Review Section
Stripe and junction-vortex phases in linearly coupled Bose-Einstein condensates
Creators: name: Qiu, Haibo
name: Zhang, Dengling
name: Mateo, Antonio Muñoz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Soon after its theoretical prediction, striped-density states in the presence of synthetic spin-orbit coupling were realized in Bose-Einstein condensates of ultracold neutral atoms [J.-R. Li et al., Nature \textbf{543}, 91 (2017)]. The achievement opens avenues to explore the interplay of superfluidity and crystalline order in the search for supersolid features and materials. The system considered is essentially made of two linearly coupled Bose-Einstein condensates, that is a pseudo-spin-$1/2$ system, subject to a spin-dependent gauge field $σ_z \hbar k_\ell$. Under these conditions the stripe phase is achieved when the linear coupling $\hbarΩ/2$ is small against the gauge energy $mΩ/\hbar k_\ell^2<1$ . The resulting density stripes have been interpreted as a standing-wave, interference pattern with approximate wavenumber $2k_\ell$. Here, we show that the emergence of the stripe phase is induced by an array of Josephson vortices living in the junction defined by the linear coupling. As happens in superconducting junctions subject to external magnetic fields, a vortex array is the natural response of the superfluid system to the presence of a gauge field. Also similar to superconductors, the Josephson currents and their associated vortices can be present as a metastable state in the absence of gauge field. We provide closed-form solutions to the 1D mean field equations that account for such vortex arrays. The underlying Josephson currents coincide with the analytical solutions to the sine-Gordon equation for the relative phase of superconducting junctions [C. Owen and D. Scalapino, Phys. Rev. \textbf{164}, 538 (1967)].
description: 6 pages, 3 figures
Quantum Mechanics of the Doubled Torus
Creators: name: Hackett-Jones, Emily
name: Moutsopoulos, George
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the quantum mechanics of the doubled torus system, introduced by Hull [1] to describe T-folds in a more geometric way. Classically, this system consists of a world-sheet Lagrangian together with some constraints, which reduce the number of degrees of freedom to the correct physical number. We consider this system from the point of view of constrained Hamiltonian dynamics. In this case the constraints are second class, and we can quantize on the constrained surface using Dirac brackets. We perform the quantization for a simple T-fold background and compare to results for the conventional non-doubled torus system. Finally, we formulate a consistent supersymmetric version of the doubled torus system, including supersymmetric constraints.
description: 31 pages, 1 figure; v2: references added, minor corrections to final section
Integrability of boundary Liouville conformal field theory
Creators: name: Remy, Guillaume
name: Zhu, Tunan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Liouville conformal field theory (LCFT) is considered on a simply connected domain with boundary, specializing to the case where the Liouville potential is integrated only over the boundary of the domain. We work in the probabilistic framework of boundary LCFT introduced by Huang-Rhodes-Vargas (2015). Building upon the known proof of the bulk one-point function by the first author, exact formulas are rigorously derived for the remaining basic correlation functions of the theory, i.e., the bulk-boundary correlator, the boundary two-point and the boundary three-point functions. These four correlations should be seen as the fundamental building blocks of boundary Liouville theory, playing the analogue role of the DOZZ formula in the case of the Riemann sphere. Our study of boundary LCFT also provides the general framework to understand the integrability of one-dimensional Gaussian multiplicative chaos measures as well as their tail expansions. Finally these results have applications to studying the conformal blocks of CFT and set the stage for the more general case of boundary LCFT with both bulk and boundary Liouville potentials.
description: 70 pages, 2 figures