cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Vortices on demand in multicomponent Bose-Einstein condensates
Creators: name: Zamora-Zamora, Roberto
name: Lozada-Hidalgo, Marcelo
name: Caballero-Benitez, Santiago F.
name: Romero-Rochin, Victor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a simple mechanism to produce vortices at any desired spatial locations in harmonically trapped Bose-Einstein condensates (BEC) with multicomponent spin states coupled to external transverse and axial magnetic fields. The vortices appear at the spatial points where the spin-transverse field interaction vanishes and, depending on the multipolar magnetic field order, the vortices can acquire different predictable topological charges. We explicitly demonstrate our findings, both numerically and analytically, by analyzing a 2D BEC via the Gross-Pitaevskii equation for atomic systems with either two or three internal states. We further show that, by an spontaneous symmetry breaking mechanism, vortices can appear in any spin component, unless symmetry is externally broken at the outset by an axial field. We suggest that this scenario may be tested using an ultracold gas of $^{87}$Rb occupying all three $F = 1$ states in an optical trap.
description: 11 pages, 9 figures, (Accepted in PRA)
Light stop/sbottom pair production searches in the NMSSM
Creators: name: Bi, Xiao-Jun
name: Yan, Qi-Shu
name: Yin, Peng-Fei
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work, we study the constraints on the scenario of light stops and sbottoms in the next-to-minimal supersymmetric standard model (NMSSM), especially by a 125 GeV Higgs boson discovery and the LHC bounds on supersymmetry. The constraints from dark matter detections are also taken into account. From the parameter scan, we find that the NMSSM can well accommodate a light Higgs boson around 125 GeV and decay patterns. We would like to stress that the LHC direct supersymmetry searches with b-tagging are very powerful and can set strong bounds on many NMSSM parameter points with light stops and sbottoms. We find $\tilde {t}\to b\tildeχ^+_1$ is a very promising channel for light stop detection if the mass splitting between $\tildeχ^+_1$ and $\tildeχ^0_1$ is very small. It is also pointed out that in order to close the parameter space of light stops and sbottoms, new search strategies for signal channels such as $p p \to {\tilde t_1} {\tilde t_1} \to t {\bar t} h h \tildeχ^0_1 \tildeχ^0_1$ and $p p \to {\tilde b_1} {\tilde b_1} \to t {\bar t} W^+ W^- \tildeχ^0_1 \tildeχ^0_1$ may be necessary.
description: 43 pages, 18 figs
On groups with quasidiagonal C*-algebras
Creators: name: Carrión, José
name: Dadarlat, Marius
name: Eckhardt, Caleb
Publisher: name: arXiv
Year: 2012
Subjects: subject: Operator Algebras (math.OA)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 46L05 (Primary) 22D25 (Secondary)

description: We examine the question of quasidiagonality for C*-algebras of discrete amenable groups from a variety of angles. We give a quantitative version of Rosenberg's theorem via paradoxical decompositions and a characterization of quasidiagonality for group C*-algebras in terms of embeddability of the groups. We consider several notable examples of groups, such as topological full groups associated with Cantor minimal systems and Abels' celebrated example of a finitely presented solvable group that is not residually finite, and show that they have quasidiagonal C*-algebras. Finally, we study strong quasidiagonality for group C*-algebras, exhibiting classes of amenable groups with and without strongly quasidiagonal C*-algebras.
description: Minor corrections
Impact des transferts monétaires ordinaires sur la capacité des ménages bénéficiaires en état de pauvreté chronique en zone urbaine : Application dans la ville de Yaoundé, Cameroun.
Creators: name: MVONO ESSONO, Bertrand
name: ASSAKO ESSIBEN, Jean-Pierre
name: ALIMA, Alain
Publisher: name: Zenodo
Year: 2023
Subjects: Transferts monétaires ordinaires ; Capacité ; Ménages ; Pauvreté ; Zone urbaine.

description: La présente étude a pour objectif d'apprécier les effets des transferts monétaires ordinaires sur la capacité des ménages bénéficiaires dans la ville de Yaoundé au cours de la période allant de 2020 à 2022. A cet effet, nous avons mobilisé des données issues des sources secondaires pourvues par l'enquête Proxy Mean Test (PMT) relatives aux caractéristiques du ménage pauvre d'une part et d'autre part des sources primaires issues de l'enquête sur l'Evaluation Finale du projet de Transferts Monétaires Ordinaires sur la Capacité des Ménages Bénéficiaires (EEFTOCAM) dans la ville de Yaoundé. Notre étude révèle qu'en respectant la mise en œuvre du projet filets sociaux, les transferts monétaires ordinaires atténuent l'exposition des ménages bénéficiaires face aux risques sociaux d'une part et d'autre part par la méthode des doubles moindres carrés, les transferts monétaires ordinaires affectent significativement la capacité des ménages bénéficiaires. Ces résultats révèlent la nécessité d'une action coordonnée des pouvoirs publics et des bailleurs de fonds comme la Banque Mondiale en matière de protection sociale pour juguler les effets de l'exposition des ménages en état de pauvreté chronique face aux risques sociaux.
A Transcendental Invariant of Pseudo-Anosov Maps
Creators: name: Sun, Hongbin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M27, 37E30

description: For each pseudo-Anosov map $ϕ$ on surface $S$, we will associate it with a $\mathbb{Q}$-submodule of $\mathbb{R}$, denoted by $A(S,ϕ)$. $A(S,ϕ)$ is defined by an interaction between the Thurston norm and dilatation of pseudo-Anosov maps. We will develop a few nice properties of $A(S,ϕ)$ and give a few examples to show that $A(S,ϕ)$ is a nontrivial invariant. These nontrivial examples give an answer to a question asked by McMullen: the minimal point of the restriction of the dilatation function on fibered face need not be a rational point.
description: 32 pages, 10 figures, abstract has been modified by following suggestion from Curtis McMullen
D. Ginard i Féron, Mallorca während der Franco-Diktatur. Politik, Wirtschaft und Gesellschaft 1939–1975, aus dem Katalanischen von D. von Keitz und M. Santamaria, 2001
Creators: name: Tichy, Christiane
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 31 Nr. 3 (2004)
title: Beobachte das Stolpern: Ein pädagogisches Denkbild zwischen Bauhaus und Benjamin
Creators: name: Dreyer, Matthias
Publisher: name: Universität Erfurt
Year: 2023
Subjects: subject: 300

description: Stumbling has been a proven means of art at least since Charlie Chaplin at the start of the twentieth century. In modernist discourse, however, it has not been adequately reflected on, either as a bodily practice or as a methodological principle. Symptomatic here is Henri Bergson's negative understanding of stumbling as an interruption in the adaption to the living. In contrast, the present investigation traces the motif of stumbling in the art pedagogy of the 1920s. Here it appears as a Denkbild (thought-image) of the aesthetic and of the latter’s education and learning processes, which allow other, new ways of living to emerge. The focus is on László Moholy-Nagy’s texts on art education at the Bauhaus, Heinrich Jacoby’s music-pedagogical conception of another kind of listening, and Walter Benjamin’s “Program for a Proletarian Children's Theater.” In these texts and practices from the 1920s, stumbling comes into its own as a moment of reflection of a selfbeholding modernity, while also becoming readable as an example of a different philosophy of life, one that welcomes failure as a productive force for the living.
description: Body Politics: Zeitschrift für Körpergeschichte, vol. 10(2022), no. 14, p. 171
Photonuclear interactions at very high energies and vector meson dominance
Creators: name: Bugaev, E. V.
name: Mangazeev, B. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We show that nucleon electromagnetic structure functions of deep inelastic scattering in Regge-Gribov limit (fixed Q-squared, asymptotically large 1/x and s) can be well described in the two-component (soft + hard) approach. In the concrete model elaborated by authors, the soft part of the virtual photon-nucleon scattering is given by the vector meson dominance, with taking into account the radial excitations of the rho-meson and nondiagonal transitions in meson-nucleon interactions. The hard part is calculated by using the dipole factorization, i.e., the process is considered as the dissociation of the photon into a q and anti-q - pair (the "color dipole") and the subsequent interaction of this dipole with the nucleon. The dipole cross section has a Regge-type s-dependence and vanishes in the limit of large transverse sizes of the dipole. We give the brief description of the model and present results of the detailed comparison of model predictions with experimental data for electromagnetic structure functions of the nucleon.
description: 6 pages, 4 figures, the revised version prepared for a publication in Proceedings of 23rd European Cosmic Ray Symposium
Cytoarchitectonic, receptor distribution and functional connectivity analyses of the macaque frontal lobe
Creators: name: Rapan, Lucija J.
name: Froudist-Walsh, Sean
name: Niu, Meiqi
name: Xu, Ting
name: Zhao, Ling
name: Funck, Thomas
name: Wang, Xiao-Jing
name: Amunts, Katrin
name: Palomero-Gallagher, Nicola
Publisher: name: Forschungzentrum Jülich
Year: 2022
Subjects: subject: 570

description: bioRxiv beta (2022). doi:10.1101/2022.06.27.497757
description: Published by Cold Spring Harbor Laboratory, NY, Cold Spring Harbor
Different realizations of kappa-momentum space and relative-locality effect
Creators: name: Meljanac, Stjepan
name: Pachol, Anna
name: Samsarov, Andjelo
name: Gupta, Kumar S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider different realizations for the momentum sector of kappa-Poincare Hopf algebra, which is associated with a curved momentum space. We show that the notion of the particle mass as introduced recently by Amelino-Camelia et al. in the context of relative-locality is realization independent for a wide class of realizations, up to linear order in deformation parameter l. On the other hand, the time delay formula clearly shows a dependence on the choice of realization.
description: 12 pages; extended version of the paper published in Phys. Rev. D 87, 125009 (2013)
Radion-higgs mixing state at the LHC with the KK contributions to the production and decay
Creators: name: Kubota, Hirohisa
name: Nojiri, Mihoko
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we study the higgs-radion system of the Randall-Sundum model where matter and gauge fields live in the bulk. We take into account the Kalza-Klein(KK) loop correction for the higgs and the raidion coupling to the gauge bosons. Inspired by the LHC data in 2011 where a sign of the higgs boson has been seen at 125 GeV, we fix the one of the mass eigenstate of the higgs-radion mixed state at 125 GeV, and scan over all the other parameters which have not been excluded by the 2011's data. We find the region of parameters where the scalar particle at 125 GeV have branching ratio larger or smaller than that of the Standard Model(SM) higgs significantly. The predicted ratio Br(ZZ)/Br(gamma gamma) also may be different from that of the SM higgs boson.
description: 13 pages 6 figures
B. Eisenfeld, R. Engelmann, unter Mitarbeit von R. Teske und G. Weber, 13. August 1961: Mauerbau. Fluchtbewegung und Machtsicherung, mit einem Vorwort von M. Birthler, 2001
Creators: name: Buffet, Cyril
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 31 Nr. 3 (2004)
Abelian Repetitions in Sturmian Words
Creators: name: Fici, Gabriele
name: Langiu, Alessio
name: Lecroq, Thierry
name: Lefebvre, Arnaud
name: Mignosi, Filippo
name: Prieur-Gaston, Élise
Publisher: name: arXiv
Year: 2012
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: F.2.2; F.4.3; G.2.1
subject: 68R15

description: We investigate abelian repetitions in Sturmian words. We exploit a bijection between factors of Sturmian words and subintervals of the unitary segment that allows us to study the periods of abelian repetitions by using classical results of elementary Number Theory. We prove that in any Sturmian word the superior limit of the ratio between the maximal exponent of an abelian repetition of period $m$ and $m$ is a number $\geq\sqrt{5}$, and the equality holds for the Fibonacci infinite word. We further prove that the longest prefix of the Fibonacci infinite word that is an abelian repetition of period $F_j$, $j>1$, has length $F_j(F_{j+1}+F_{j-1} +1)-2$ if $j$ is even or $F_j(F_{j+1}+F_{j-1})-2$ if $j$ is odd. This allows us to give an exact formula for the smallest abelian periods of the Fibonacci finite words. More precisely, we prove that for $j\geq 3$, the Fibonacci word $f_j$ has abelian period equal to $F_n$, where $n = \lfloor{j/2}\rfloor$ if $j = 0, 1, 2\mod{4}$, or $n = 1 + \lfloor{j/2}\rfloor$ if $ j = 3\mod{4}$.
description: Accepted to DLT 2013
Ein Schutzdach über der Steinkiste von Schankweiler
Creators: name: Gollub, Siegfried
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: [nicht vorhanden]
description: Funde und Ausgrabungen im Bezirk Trier, 1973: Funde und Ausgrabungen im Bezirk Trier : Mitteilungen des Rheinischen Landesmuseums Trier
Titelei
Creators: name: Redaktion, Die
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: -
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 12 (1980): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
Toward a proof of long range order in 4-d SU(N) lattice gauge theory
Creators: name: Grady, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: An extended version of 4-d SU(2) lattice gauge theory is considered in which different inverse coupling parameters are used, $β_H=4/g_{H}^2$ for plaquettes which are purely spacelike, and $β_V$ for those which involve the Euclidean timelike direction. It is shown that when $β_H = \infty$ the partition function becomes, in the Coulomb Gauge, exactly that of a set of non-interacting 3-d O(4) classical Heisenberg models. Long range order at low temperatures (weak coupling) has been rigorously proven for this model. It is shown that the correlation function demonstrating spontaneous magnetization in the ferromagnetic phase is a continuous function of $g_H$ at $g_H =0$ and therefore that the spontaneously broken phase enters the ($β_H$, $β_V$) phase plane (no step discontinuity at the edge). Once the phase transition line has entered, it can only exit at another identified edge, which requires the SU(2) gauge theory within also to have a phase transition at finite $β$. A phase exhibiting spontaneous breaking of the remnant symmetry left after Coulomb gauge fixing, the relevant symmetry here, is non-confining. Easy extension to the SU(N) case implies that the continuum limit of zero-temperature 4-d SU(N) lattice gauge theories is not confining, in other words gluons by themselves do not produce a confinement.
description: 13 pages, LaTex, 3 eps figs. Ver 2 some clarifications added, title modified, one citation fixed
Eine Überprägung der Trierer Münzstätte aus der Zeit des Usurpators Magnentius
Creators: name: Gilles, Karl-Josef
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: [nicht vorhanden]
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 20 (1988): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
Brot und Gebäck aus dem keltisch-römischen Gräberfeld von Wederath-Belginum : neue Ergebnisse und Rekonstruktion des Gebäcks
Creators: name: Währen, Max
name: Rudin, Peter M.
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: [nicht vorhanden]
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 22 (1990): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
Non-thermal quantum black holes with quantized masses
Creators: name: Calmet, Xavier
name: Gausmann, Nina
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we discuss non-thermal quantum black holes with a discrete mass spectrum and their possible new signatures at the LHC. We calculate the inclusive cross sections for the production of quantum black holes with discrete masses at the LHC as well as some exclusive cross sections for particularly interesting decay modes.
description: 31 pages
Roderick B. Salisbury, Soilscapes in Archaeology
Creators: name: Porčić, Marko
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Roderick B. Salisbury, Soilscapes in Archaeology. Settlement and Social Organization in the Neolithic of the Great Hungarian Plain. Prehistoric Research in the Körös Region volume 3. Archaeolingua volume 37. Archaeolingua Alapítvány, Budapest 2016. ISBN 978-963-9911-79-6. 329 pages
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 96 2018(2019)
A new approach to photoionization modelling and accurate metallicities of the ionized gas
Creators: name: Marconi, Alessandro
Publisher: name: Zenodo
Year: 2023

description: The metallicity of the ionized gas provides important clues on the formation of galaxies such as the mass-metallicity and fundamental metallicity relations. The Te-method is commonly used to estimate metallicities and is based on gas densities and temperatures from forbidden line ratios. It has been used for decades but has been developed when computational resources were extremely limited, hence it is based on very simplified assumptions. The accuracy reached by current spectroscopic measurements calls for more accurate approaches.I will present an innovative approach to photoionization modelling which allows to reproduce many observed line ratios from a wide range of ionization stages with an unprecedented accuracy of 10%. As in previous work, our approach is based on the weighted combination of multiple single cloud photoionization models, but the novelty is in the computation of the weights which are set by the observations. Our approach provides a significant improvement compared to existing models and allows accurate determinations of the metallicity of the ionized gas. I will present the results obtained from applying these models to different samples of HII regions, star forming galaxies and AGN showing, for instance, how we can solve the discrepant metallicities between HI regions and stars in our Galaxy, how we can estimate the average physical conditions of ionized gas in galaxies and how the Te-method can severely underestimate gas abundances.
Michael Herdick, Ökonomie der Eliten
Creators: name: Atzbach, Rainer
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Michael Herdick, Ökonomie der Eliten. Eine Studie zur Interpretation wirtschaftsarchäologischer Funde und Befunde von mittelalterlichen Herrschaftssitzen. Monographien des RGZM volume 124. Römisch-Germanisches Zentralmuseum, Mainz 2015. ISBN 978-3-88467-236-5. xi + 453 pages with 155 illustrations (mostly black and white, 2 full coloured)
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 96 2018(2019)
Sarah Milledge Nelson, Shamans, Queens and Figurines
Creators: name: Palincaş, Nona
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Sarah Milledge Nelson, Shamans, Queens and Figurines. The Development of Gender Archaeology. Left Coast, Walnut Creek 2015. £ 110,–. ISBN 978-1-61132-946-9. (Hardcover). ISBN 978-1-61132-947-6. (Taschenbuch). ISBN 978-1-31542-025-7. (E-Book). 287 Seiten mit 8 Abbildungen
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 96 2018(2019)
Survey of the metal-poor stars with 2m Himalayan Chandra Telescope
Creators: name: Saraf, Pallavi
name: Sivarani, Thirupathi
Publisher: name: Zenodo
Year: 2023
Subjects: stellar nucleosynthesis
r-process
Milky Way
Galactic Components

description: We present chemical abundances of forty newly discovered bright (V< 12mag ) metal-poor stars from the HESP-GOMPA Survey observed in the recent 1.5 years. Most of these targets fall in the metallicity range of -2.5 to -1.5. This is an interesting metallicity where there is a significant change in the abundance trends of key elements indicating major milestones in the galaxy evolution or operation of new nucleosynthesis sites. The formation of the majority of thick disk and inner halo stars also falls in this metallicity range. We present detailed elemental abundances including several n-capture elements that have the potential to constraint ages, along with the kinematics of these stars to compare the chemical and kinematical origins of them. Many of these bright stars with detailed abundances could form benchmark stars for future metal-poor star surveys.
Ashes still smoking: the influence of fire and land cover on Pantanal ecoregion amphibians
Creators: name: F.B. Moreira, Leonardo
name: P. Smaniotto, Natália
name: Ceron, Karoline
name: J. Santana, Diego
name: L. Ferreira, Vanda
name: Strüssmann, Christine
name: Galatti, Ulisses
Publisher: name: Brill Online
Year: 2023
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified

description: Fire and land cover are two elements intertwined with the natural history of organisms from seasonally dry environments. Here, we investigated the influence of fire attributes (burned area and frequently-burned area) and land cover on the relative abundance of three amphibians from the Pantanal ecoregion that belong to distinct ecomorphological groups: Chiasmocleis albopunctata, Pseudis platensis, and Scinax acuminatus. We systematically reviewed amphibian ecology studies in the Pantanal and analysed quantitative data between 2000 and 2021, comprising 34 sites from 12 amphibian surveys. Amphibian abundance, land cover, and fire data were assessed within buffers of a 1,000 m radius. Species abundance was correlated with burned area and wetland cover. While the abundance of C. albopunctata and P. platensis decreased with burned area in the last three years, the abundance of S. acuminatus increased with wetland cover. Despite the claimed resilience of species inhabiting grasslands and savannas, there was substantial evidence for the influence of burned areas, even under modest human land use. Our findings illustrate that a broad array of land cover and fire attributes may influence amphibian persistence in the Pantanal ecoregion, with the magnitude depending on species traits often overlooked in modelling approaches.
Probing in-medium spin-orbit potential with intermediate-energy heavy-ion collisions
Creators: name: Xu, Jun
name: Li, Bao-An
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Incorporating for the first time both the spin and isospin degrees of freedom explicitly in transport model simulations of intermediate-energy heavy-ion collisions, we observe that a local spin polarization appears during collision process. Most interestingly, it is found that the nucleon spin up-down differential transverse flow is a sensitive probe of the spin-orbit interaction, providing a novel approach to probe both the density and isospin dependence of the in-medium spin-orbit coupling that is important for understanding the structure of rare isotopes and synthesis of superheavy elements.
description: 5 pages, 4 figures, time-odd terms included, version to appear in Phys. Lett. B
Enhancing the stability of a fractional Chern insulator against competing phases
Creators: name: Grushin, Adolfo G.
name: Neupert, Titus
name: Chamon, Claudio
name: Mudry, Christopher
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We construct a two-band lattice model whose bands can carry the Chern numbers C=0,pm1,pm2. By means of numerical exact diagonalization, we show that the most favorable situation that selects fractional Chern insulators (FCIs) is not necessarily the one that mimics Landau levels, namely a flat band with Chern number 1. First, we find that the gap, measured in units of the on-site electron-electron repulsion, can increase by almost two orders of magnitude when the bands are flat and carry a Chern number C=2 instead of C=1. Second, we show that giving a width to the bands can help to stabilize a FCI. Finally, we put forward a tool to characterize the real-space density profile of the ground state that is useful to distinguish FCI from other competing phases of matter supporting charge density waves or phase separation.
description: 10 pages, 6 figures
Semi-global symplectic invariants of the Euler top
Creators: name: Papadopoulos, George
name: Dullin, Holger R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Symplectic Geometry (math.SG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 70E17, 70E15

description: We compute the semi-global symplectic invariants near the hyperbolic equilibrium points of the Euler top. The Birkhoff normal form at the hyperbolic point is computed using Lie series. The actions near the hyperbolic point are found using Frobenius expansion of its Picard-Fuchs equation. We show that the Birkhoff normal form can also be found by inverting the regular solution of the Picard-Fuchs equation. Composition of the singular action integral with the Birkhoff normal form gives the semi-global symplectic invariant. Finally, we discuss the convergence of these invariants and show that in a neighbourhood of the separatrix the pendulum is not symplectically equivalent to any Euler top.
description: 18 pages, 4 figures, PDFLaTeX, submitted to The Journal of Geometric Mechanics (JGM)
Das Silberemail-Reliquiar im Regensburger Domschatz und seine Restaurierung
Creators: name: Steingräber, Erich
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 5 Nr. 8 (1952): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Die 26. Biennale in Venedig
Creators: name: Roh, Juliane
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 5 Nr. 8 (1952): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Redaktionelle Anmerkungen
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 5 Nr. 8 (1952): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Ludwig Schudt, Italienreisen im 17. und 18. Jahrhundert
Creators: name: Keller, Harald
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Rezension zu: Ludwig Schudt, Italienreisen im 17. und 18. Jahrhundert (Römische Forschungen der Bibliotheca Hertziana, Band XV). Wien, Schroll-Verlag o. J. (1959). 449 Seiten in 4° mit 128 zeitgenössischen Abbildungen.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 13 Nr. 6 (1960): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
MPEC 2023-W101 : DAILY ORBIT UPDATE (2023 November 23)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

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.
Jean Laran, L'Estampe
Creators: name: Keil, Nora
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Rezension zu: Jean Laran, L'Estampe. Paris, Presses universitaires de France, 1959. Textband 450 Seiten, Tafelband 428 Kupfertiefdruckabbildungen und 16 Farbtafeln.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 13 Nr. 6 (1960): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Some properties of maximally entangled ELW game
Creators: name: Bolonek-Lason, Katarzyna
name: Kosinski, Piotr
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The Eisert et al. maximally entangled quantum game is studied within the framework of (elementary) group theory. It is shown that the game can be described in terms of real Hilbert space of states. It is also shown that the crucial properties of the maximally entangled case, like quaternionic structure and the existence, to any given strategy, the corresponding counterstrategy, result from the existence of large stability subgroup of initial state of the game.
description: 12 pages, no figures; the paper is substantially enlarged. Accepted for publication in PTEP
Signatures of pristine cold-flows at z~2 using lensed quasars
Creators: name: Cortés Muñoz, Hugo R.
Publisher: name: Zenodo
Year: 2023

description: According to Lambda-CDM theory, star formation at high redshift should be primarily sustained by steady cold accretion from the Intergalactic Medium (IGM). However, there is little observational support for such inflows of pristine material. In this study we examine this issue by using QSO absorption line systems at z~2. In particular, we use high S/N UVES spectra of lensed QSOs with projected line-of-sight separations of ∼2 kpc. These separations are expected to uncover kinematic signatures of cold flows as seen in HI absorption at the level of ~x10 km/s. We use ~15 metal systems as signposts for galaxies close in projection (but otherwise not detected), for which we detect a total of ∼50 velocity components that are also seen in Ly-alpha and/or Ly-beta. As opposed to Ly-alpha forest lines, most of these components show kinematic differences but not all have associated metals, down to stringent limits. Our hypothesis is that the latter correspond to sightlines crossing pristine gas inflows from the IGM. We discuss the fraction of candidates in the context of the predicted covering fraction of cold-flows at Cosmic Noon.
Passive Curvaton
Creators: name: Lin, Chia-Min
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a class of curvaton models which we call passive curvaton. In this paper, two kinds of passive curvaton is considered. The first one is a pseudoscalar curvaton couples to a gauge field. Different from the inflaton case, the constraint from formation of primordial black holes (PBHs) is much weaker and large non-gaussianity (of the equiliteral type) can be produced. The second model is a dilaton-like scalar curvaton couples to a gauge field. We investigate the scale dependence of non-gaussianity in this model. In both models, the spectrum and non-Gaussianity are enhanced by the slow-roll parameter of the curvaton field. Other possible passive curvaton models are also mentioned.
description: 9 pages, 2 figures, to appear in PLB
Die Pariser Ausstellung "Quellen des 20. Jahrhunderts"
Creators: name: Heise, Carl Georg
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 14 Nr. 3 (1961): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Eisner, Jan: Devinska Nova Ves
Creators: name: Jacob-Friesen, Karl Hermann
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Eisner, Jan: Devinska Nova Ves. Mit deutscher Zusammenfassung. Bratislava 1952. 412 Seiten mit VII Plänen und 114 Taf.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 24 (1955): Nachrichten aus Niedersachsens Urgeschichte
A tomographic view of metals in the Milky Way in the context of cosmic metalliticity evolution
Creators: name: Corro-Guerra, Felipe
name: Berg, Trystyn
name: López, Sebastián
Publisher: name: Zenodo
Year: 2023

description: The Milky Way (MW) interstellar and circumgalactic gas can be studied in absorption against extragalactic sources in a tomographic fashion. Damped Ly-alpha systems (DLAs), are absorption systems defined as having a HI column density higher than 20.3, at such high HI column density they are shielded from ionization and therefore metals in the gas-phase are mostly neutral. At high redshift DLA metallicity traces the metallicity of the most UV-bright galaxies, so DLA metallicity history provides important information about Galaxy metallicity evolution. The MW is relevant because in absorption it can be identified as a DLA at z=0.In this talk I will report a study of 209 HST/COS QSO archival spectra aimed at measuring HI column densities and metallicities in the MW. These column densities are used to (1) assess spatial variations and (2) compare the variations with DLA gas-phase metallicities from the literature. We find that the average metallicity in the MW is close to solar, as expected from models of cosmic metallicity evolution. Furthermore, the scatter is ~1 dex across all the sky. This scatter is just slightly lower than the scatter seen in DLAs at all redshifts. This similarity implies that the random DLA sightlines may be subject not only to variations according to different galaxy types or masses but also to orientation effects.I will discuss the implications that such comparison has for metal enrichment models of the MW and DLAs.
Comparing the degrees of incompatibility inherent in probabilistic physical theories
Creators: name: Busch, Paul
name: Heinosaari, Teiko
name: Schultz, Jussi
name: Stevens, Neil
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a new way of quantifying the degrees of incompatibility of two ob- servables in a probabilistic physical theory and, based on this, a global measure of the degree of incompatibility inherent in such theories, across all observable pairs. This opens up a novel and flexible way of comparing probabilistic theories with respect to the nonclassical feature of incompatibility, raising many interesting questions, some of which will be answered here. We show that quantum theory contains observables that are as incompatible as any probabilistic physical theory can have if arbitrary pairs of observables are considered. If one adopts a more refined measure of the degree of incompatibility, for instance, by restricting the comparison to binary observables, it turns out that there are probabilistic theories whose inherent degree of incompatibility is greater than that of quantum mechanics.
description: Minor corrections in version 2, several new results added in version 3. Version 4 contains more detail on some proofs and terminological improvements
Origin and growth of nuclear star clusters around massive black holes
Creators: name: Antonini, Fabio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The centers of stellar spheroids are often marked by the presence of nucleated central regions, called nuclear star clusters (NSCs). The origin of NSCs is still unclear. Here we investigate the possibility that NSCs originate from the migration and merger of stellar clusters at the center of galaxies where a massive black hole (MBH) may sit. We show that the observed relation between NSC masses and the velocity dispersion of their host spheroids cannot be reconciled with a purely in-situ formation scenario. On the other hand, the observed relation appears to be in agreement with the predictions of the cluster merger model which also reproduces the observed relation between the size of NSCs and their total luminosity. We evolve through dynamical friction a population of stellar clusters in a model of a galactic bulge taking into account dynamical dissolution, starting from a power-law cluster initial mass function and a total mass in stellar clusters consistent with the cluster formation efficiency of the Milky Way (MW). The most massive clusters reach the center of the galaxy and merge to form a compact nucleus; after 10 Gyr, the resulting NSC has properties that are consistent with the observed distribution of stars in the MW NSC. When a MBH is included at the center of a galaxy, globular clusters are tidally disrupted during inspiral, resulting in NSCs with lower densities than those of NSCs forming in galaxies with no MBHs. We suggest this as a possible explanation for the lack of NSCs in galaxies containing MBHs more massive than ~10^8M_Sun. Finally, we investigate the orbital evolution of globular clusters in giant elliptical galaxies which are believed to always host a MBH at their center rather than a NSC. In these systems an additional mechanism can prevent a NSC from forming: the time for globular clusters to reach the center of the galaxy is much longer than the Hubble time.
description: 15 pages, 4 figures. Accepted for publication in ApJ
Prospects of antideuteron detection from dark matter annihilations or decays at AMS-02 and GAPS
Creators: name: Ibarra, Alejandro
name: Wild, Sebastian
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The search for cosmic antideuterons has been proposed as a promising method to indirectly detect dark matter, due to the very small background flux from spallations expected at the energies relevant to experiments. The antideuteron flux from dark matter annihilations or decays is, however, severely constrained by the non-observation of an excess in the antiproton-to-proton fraction measured by PAMELA. In this paper we calculate, for representative dark matter annihilation and decay channels, upper limits on the number of antideuteron events at AMS-02 and GAPS from requiring that the associated antiproton flux is in agreement with the PAMELA data. To this end, we first analyze in detail the formation of antideuterons in the coalescence model using an event-by-event Monte Carlo simulation and using data from various high energy experiments. We find that the resulting coalescence momentum shows a dependence on the underlying process and on the center of mass energy involved. Then, we calculate, using a diffusion model, the flux of antideuterons at the Earth from dark matter annihilations or decays. Our results indicate that, despite the various sources of uncertainty, the observation of an antideuteron flux at AMS-02 or GAPS from dark matter annihilations or decays will be challenging.
description: 19 pages, 7 figures. Matches published version
A Comprehensive Study of Gamma-Ray Burst Optical Emission: II. Afterglow Onset and Late Re-Brightening Components
Creators: name: Liang, En-Wei
name: Li, Liang
name: Gao, He
name: Zhang, Bing
name: Liang, Yun-Feng
name: Wu, Xue-Feng
name: Yi, Shuang-Xi
name: Dai, Zi-Gao
name: Tang, Qing-Wen
name: Chen, Jie-Min
name: Hou-Jun, L.
name: Zhang, Jin
name: Lu, Rui-Jing
name: Lian-Zhong, L. V.
name: Wei, Jian-Yan
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We continue our systematic statistical study of various components in gamma-ray burst (GRB) optical lightcurves. We decompose the early onset bump and the late re-brightening bump with empirical fits and analyze their statistical properties. Among the 146 GRBs that have well-sampled optical lightcurves, the onset and re-brightening bumps are observed in 38 and 26 GRBs, respectively. It is found that the typical rising and decaying slopes for both the onset and re-brightening bumps are ~1.5 and -1.15, respectively. No early onset bumps in the X-ray band are detected to be associated with the optical onset bumps, while an X-ray re-brightening bump is detected for half of the re-brightening optical bumps. The peak luminosity is anti-correlated with the peak time, L_p\propto t_{p}^{-1.81+/-0.32} and L_p\propto t_{p}^{-0.83+/-0.17} for the onset and re-brightening bumps, respectively. Both L_p and the isotropic energy release of the onset bumps are correlated with E_{γ, iso}, whereas no similar correlation is found for the re-brightening bumps. Taking the onset bumps as probes for the properties of the fireballs and their ambient medium, we find that the typical power-law index of the relativistic electrons is 2.5 and the medium density profile behaves as n\propto r^{-1} within the framework of the synchrotron external shock models. With the medium density profile obtained from our analysis, we also confirm the correlation between initial Lorentz factor (Γ_0) and E_{γ, iso} in our previous work. The jet component that produces the re-brightening bump seems to be on-axis and independent of the prompt emission jet component. Its typical kinetic energy budget would be about one order of magnitude larger than the prompt emission component, but with a lower Γ_0, typically several tens.
description: 38 pages, 2 tables, 13 figures, accepted for publication in ApJ
title: Neuauflagen alter Affinitäten, oder Psychotherapie an der Charité (ab 1957): Neurosen, Künste, Ausdruckskörper
Creators: name: Witt, Sophie
Publisher: name: Universität Erfurt
Year: 2023
Subjects: subject: 300

description: In the context of medicine, ‘wholeness’ recalls different things: of course, the relationship between body and soul, or soma, psyche and environment, depending on the historical context and different terminologies. But holism is also playing a role in the self-understanding of a medicine or psychiatry that strives for the ‘whole’ by incorporating questions, methods, and perspectives from the humanities and the arts. Although holistic medicine existed before the 18th century, this claim of a ‘bio-psycho-social epistemology’ dates from the 18th century and its so-called ‘anthropological turn’; and it reemerges in psychosomatic medicine in the 20th century. This article focuses on the psychiatry of the Berlin Charité under the direction of Karl Leonhard (from 1957): In contrast to the official Pavlovian-oriented GDR psychosomatics, Leonhard had a great affinity for the arts and paid special attention to the diagnostic potential of bodily expressive phenomena with explicit recourse to the acting theory and theories of psychotechnics of the 1920s. On the one hand, the article traces the hope for a quasi ‘holistic’ transgression of one’s own scientific, disciplinary boundaries. And, on the other hand, it shows how the claim to wholeness and the aporias of knowledge are related to each other.
description: Body Politics: Zeitschrift für Körpergeschichte, vol. 10(2022), no. 14, p. 191
Dirac fermions in strong electric field and quantum transport in graphene
Creators: name: Gavrilov, S. P.
name: Gitman, D. M.
name: Yokomizo, N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Our previous results on the nonperturbative calculations of the mean current and of the energy-momentum tensor in QED with the T-constant electric field are generalized to arbitrary dimensions. The renormalized mean values are found; the vacuum polarization and particle creation contributions to these mean values are isolated in the large T-limit, the vacuum polarization contributions being related to the one-loop effective Euler-Heisenberg Lagrangian. Peculiarities in odd dimensions are considered in detail. We adapt general results obtained in 2+1 dimensions to the conditions which are realized in the Dirac model for graphene. We study the quantum electronic and energy transport in the graphene at low carrier density and low temperatures when quantum interference effects are important. Our description of the quantum transport in the graphene is based on the so-called generalized Furry picture in QED where the strong external field is taken into account nonperturbatively; this approach is not restricted to a semiclassical approximation for carriers and does not use any statistical assumtions inherent in the Boltzmann transport theory. In addition, we consider the evolution of the mean electromagnetic field in the graphene, taking into account the backreaction of the matter field to the applied external field. We find solutions of the corresponding Dirac-Maxwell set of equations and with their help we calculate the effective mean electromagnetic field and effective mean values of the current and the energy-momentum tensor. The nonlinear and linear I-V characteristics experimentally observed in both low and high mobility graphene samples is quite well explained in the framework of the proposed approach, their peculiarities being essentially due to the carrier creation from the vacuum by the applied electric field.
description: 24 pages, 1 figure; version accepted for publication in Physical Review D., some comments added
XQR-30: Probing the Enrichment of the CGM by Outflows at z > 5
Creators: name: Davies, Rebecca
Publisher: name: Zenodo
Year: 2023

description: Measurements of the metal content of the circumgalactic medium (CGM) from the era of the first galaxies to the present day are key to understanding how metals are redistributed by outflows over cosmic time. Spectra of small numbers of background z~6 quasars have revealed intervening CIV absorbers tracing enriched gas deposited into the CGM of z >~ 5 galaxies by stellar outflows. However, larger samples are required to robustly quantify the distribution of absorber properties and track the chemical evolution history of the CGM. I will present exciting new results from the ESO large program XQR-30 which has quadrupled the number of high S/N z~6 quasar spectra, enabling much more precise measurements of the properties of CIV absorbers at z >~ 5. I will compare our measurements to predictions from simple enrichment models as well as state-of-the-art cosmological simulations, and discuss implications for the formation redshifts of the first galaxies and the properties of stellar feedback at high redshift.