cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
General conditions for the generation of long-distance entanglement
Creators: name: Kuwahara, Tomotaka
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We generally investigate necessary conditions for the generation of the long-distance entanglement. We consider a quantum system in which a system mediates the indirect interaction between two spins, which we refer to as probe spins. First, we weaken the coupling between each probe spin and the mediator system to the infinitesimal strength in order to generate the long-distance entanglement. We give two necessary conditions for the mediator system to generate the long-distance entanglement. We prove that the indirect interaction cannot generate the entanglement if it is `classical.' We also give a necessary condition for the effective fields on the probe spins to satisfy. Second, we generate the long-distance entanglement by the use of only external fields. We show that external fields on the adjacent spins to the probes are necessary in addition to external fields on the probe spins. Finally, we consider the cases where the coupling strength between each probe spin and the mediator system is finite. In particular, we show two examples where the external fields on the mediator system highly enhance the long-distance entanglement.
description: 28pages, 17figures
Kirchengrabung Stuhr, Landkreis Oldenburg
Creators: name: Marschalleck, Karl-Heinz
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 34 (1965): Nachrichten aus Niedersachsens Urgeschichte
Fluctuation theorems for genuine quantum mechanical regimes
Creators: name: Silva, Thales Augusto Barbosa Pinto
name: Angelo, Renato Moreira
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Of indisputable relevance for non-equilibrium thermodynamics, fluctuations theorems have been generalized to the framework of quantum thermodynamics, with the notion of work playing a key role in such contexts. The typical approach consists of treating work as a stochastic variable and the acting system as an eminently classical device with a deterministic dynamics. Inspired by technological advances in the field of quantum machines, here we look for corrections to work fluctuations theorems when the acting system is allowed to enter the quantum domain. This entails including the acting system in the dynamics and letting it share a nonclassical state with the system acted upon. Moreover, favoring a mechanical perspective to this program, we employ a concept of work observable. For simplicity, we choose as theoretical platform the autonomous dynamics of a two-particle system with an elastic coupling. For some specific processes, we derive several fluctuation theorems within both the quantum and classical statistical arenas. In the quantum results, we find that, along with entanglement and quantum coherence, aspects of inertia also play a significant role since they regulate the route to mechanical equilibrium.
description: In this new version, we added the Appendix and made minor changes to the text. This is the final version, accepted for publication
Loss of regularity for Kolmogorov equations
Creators: name: Hairer, Martin
name: Hutzenthaler, Martin
name: Jentzen, Arnulf
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: The celebrated Hörmander condition is a sufficient (and nearly necessary) condition for a second-order linear Kolmogorov partial differential equation (PDE) with smooth coefficients to be hypoelliptic. As a consequence, the solutions of Kolmogorov PDEs are smooth at all positive times if the coefficients of the PDE are smooth and satisfy Hörmander's condition even if the initial function is only continuous but not differentiable. First-order linear Kolmogorov PDEs with smooth coefficients do not have this smoothing effect but at least preserve regularity in the sense that solutions are smooth if their initial functions are smooth. In this article, we consider the intermediate regime of nonhypoelliptic second-order Kolmogorov PDEs with smooth coefficients. The main observation of this article is that there exist counterexamples to regularity preservation in that case. More precisely, we give an example of a second-order linear Kolmogorov PDE with globally bounded and smooth coefficients and a smooth initial function with compact support such that the unique globally bounded viscosity solution of the PDE is not even locally Hölder continuous. From the perspective of probability theory, the existence of this example PDE has the consequence that there exists a stochastic differential equation (SDE) with globally bounded and smooth coefficients and a smooth function with compact support which is mapped by the corresponding transition semigroup to a function which is not locally Hölder continuous. In other words, degenerate noise can have a roughening effect. A further implication of this loss of regularity phenomenon is that numerical approximations may converge without any arbitrarily small polynomial rate of convergence to the true solution of the SDE. More precisely, we prove for an example SDE with globally bounded and smooth coefficients that the standard Euler approximations converge to the exact solution of the SDE in the strong and numerically weak sense, but at a rate that is slower then any power law.
description: Published in at http://dx.doi.org/10.1214/13-AOP838 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Wenskus, Reinhard: Stammesbildung und Verfassung. Das Werden der frühmittelalterlichen gentes
Creators: name: Uslar, R. V.
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Wenskus, Reinhard: Stammesbildung und Verfassung. Das Werden der frühmittelalterlichen gentes. Böhlau-Verlag Köln und Graz 1961. 656 S. 2 Karten
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 34 (1965): Nachrichten aus Niedersachsens Urgeschichte
Spuren eines Heerlagers vor den Toren von Sarstedt, Ldkr. Hildesheim
Creators: name: Cosack, Erhard
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 75 (2006): Nachrichten aus Niedersachsens Urgeschichte
Archäologie|Land|Niedersachsen. 25 Jahre Denkmalschutzgesetz
Creators: name: Steuer, Heiko
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Archäologie|Land|Niedersachsen. 25 Jahre Denkmalschutzgesetz. 400.000 Jahre Geschichte. Hrsg. v. Landesmuseum für Natur und Mensch und dem Niedersächsischen Landesamt für Denkmalpflege durch M. Fansa, F. Both und H. Habmann. Archäologische Mitteilungen aus Nordwestdeutschland, Beiheft 42. Stuttgart: Konrad Theiss Verlag 2004. 688 Seiten mit über 800 zumeist farbigen Abbildungen. Gebunden mit Schutzumschlag (Museumsausgabe, kartoniert; geb. Lizenzausgabe auch Darmstadt: Wissenschaftliche Buchgesellschaft). ISBN 3-8062-1926-5
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 75 (2006): Nachrichten aus Niedersachsens Urgeschichte
Confluent and Double-Confluent Heun Equations: Convergence of Solutions in Series of Coulomb Wavefunctions
Creators: name: El-Jaick, Lea Jaccoud
name: Figueiredo, Bartolomeu D. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The Leaver solutions in series of Coulomb wave functions for the confluent Heun equation (CHE) are given by two-sided infinite series, that is, by series where the summation index $n$ runs from minus to plus infinity [E. W. Leaver, J. Math. Phys. 27, 1238 (1986)]. First we show that, in contrast to the D'Alembert test, under certain conditions the Raabe test assures that the domains of convergence of these solutions include an additional singular point. Further, by using a limit proposed by Leaver, we obtain solutions for the double-confluent Heun equation (DCHE). In addition, we get solutions for the so-called Whittaker-Ince limit of the CHE and DCHE. For these four equations, new solutions are generated by transformations of variables. In the second place, for each of the above equations we obtain one-sided series solutions ($n\geq 0$) by truncating on the left the two-sided series. Finally we discuss the time dependence of the Klein-Gordon equation in two cosmological models and the spatial dependence of the Schrödinger equation to a family of quasi-exactly solvable potentials. For a subfamily of these potentials we obtain infinite-series solutions which converge and are bounded for all values of the independent variable, in opposition to a common belief}.
description: Throughout this version we use the tilde to denote asymptotic equality
Françoise-Hélène Massa Pairault, Recherches sur l’art et l’artisanat etrusco-italiques à l’époque hellénistique
Creators: name: Canciani, Fulvio
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Françoise-Hélène Massa Pairault, Recherches sur l’art et l’artisanat etrusco-italiques à l’époque hellénistique. Bibliothèque des Ecoles Françaises d’Athènes et de Rome 257, Rom 1985. 274 Seiten, 139 Abbildungen auf Tafeln
description: Bonner Jahrbücher, Bd. 187.1987: Bonner Jahrbücher
Invasion and Interaction Determine Population Composition in an Open Evolving System
Creators: name: Park, Youngjai
name: Shimada, Takashi
name: Son, Seung-Woo
name: Park, Hye Jin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: It is well-known that interactions between species determine the population composition in an ecosystem. Conventional studies have focused on fixed population structures to reveal how interactions shape population compositions. However, interaction structures are not fixed, but change over time due to invasions. Thus, invasion and interaction play an important role in shaping communities. Despite its importance, however, the interplay between invasion and interaction has not been well explored. Here, we investigate how invasion affects the population composition with interactions in open evolving systems considering generalized Lotka-Volterra-type dynamics. Our results show that the system has two distinct regimes. One is characterized by low diversity with abrupt changes of dominant species in time, appearing when the interaction between species is strong and invasion slowly occurs. On the other hand, frequent invasions can induce higher diversity with slow changes in abundances despite strong interactions. It is because invasion happens before the system reaches its equilibrium, which drags the system from its equilibrium all the time. All species have similar abundances in this regime, which implies that fast invasion induces regime shift. Therefore, whether invasion or interaction dominates determines the population composition.
description: 15 pages (including supplementary material), 8 figures (4 figures in main, 4 figures in SI)
Pierre Courroux, Charles d’Albret. Le connétable d’Azincourt, Pessac (Ausonius Éditions) 2019
Creators: name: Moeglin, Jean-Marie
Publisher: name: Francia-Recensio
Year: 2019

description: Pierre Courroux, Charles d’Albret. Le connétable d’Azincourt, Pessac (Ausonius Éditions) 2019, 341 p. (Scripta Mediaevalia, 36), ISBN 978-2-35613-250-5, EUR 25,00.
description: Francia-Recensio, 2019/3
Stability of Non-asymptotically flat thin-shell wormholes in generalized dilaton-axion gravity
Creators: name: Banerjee, Ayan
name: Rahaman, Farook
name: Chattopadhyay, Surajit
name: Banerjee, Sumita
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct a new type of thin-shell wormhole for non-asymptotically flat charged black holes in generalized dilaton-axion gravity inspired by low-energy string theory using cut-and-paste technique. We have shown that this thin shell wormhole is stable. The most striking feature of our model is that the total amount of exotic matter needed to support the wormhole can be reduced as desired with the suitable choice of the value of a parameter. Various other aspects of thin-shell wormhole are also analyzed.
description: 15 pages and 11 figures. Minor revisions have been done. Accepted in Int.J.Theor.Phys
Verena Epp, Christoph H. F. Meyer (Hg.), Recht und Konsens im frühen Mittelalter, Ostfildern (Jan Thorbecke Verlag) 2017
Creators: name: Reimitz, Helmut
Publisher: name: Francia-Recensio
Year: 2019

description: Verena Epp, Christoph H. F. Meyer (Hg.), Recht und Konsens im frühen Mittelalter, Ostfildern (Jan Thorbecke Verlag) 2017, 487 S. (Konstanzer Arbeitskreis für Mittelalterliche Geschichte. Vorträge und Forschungen, 82), ISBN 978-3-7995-6882-1, EUR 54,00.
description: Francia-Recensio, 2019/3
Michael Menzel (Bearb.), Constitutiones et acta publica imperatorum et regum. Dokumente zur Geschichte des Deutschen Reiches und seiner Verfassung. 1336–1344 (1347). Teil 2: 1340–1343, Wiesbaden (Harrassowitz Verlag) 2019
Creators: name: Erkens, Franz-Reiner
Publisher: name: Francia-Recensio
Year: 2019

description: Michael Menzel (Bearb.), Constitutiones et acta publica imperatorum et regum. Dokumente zur Geschichte des Deutschen Reiches und seiner Verfassung. 1336–1344 (1347). Teil 2: 1340–1343, Wiesbaden (Harrassowitz Verlag) 2019, XLIV–404 S. (Monumenta Germaniae Historica. Leges, 5, 7, 2), ISBN 978-3-447-10072-4, EUR 120,00.
description: Francia-Recensio, 2019/3
Resolvent methods for steady premixed flame shapes governed by the Zhdanov-Trubnikov equation
Creators: name: Borot, Gaëtan
name: Denet, Bruno
name: Joulin, Guy
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Using pole decompositions as starting points, the one parameter (-1 =< c < 1) nonlocal and nonlinear Zhdanov-Trubnikov (ZT) equation for the steady shapes of premixed gaseous flames is studied in the large-wrinkle limit. The singular integral equations for pole densities are closely related to those satisfied by the spectral density in the O(n) matrix model, with n = -2(1 + c)/(1 - c). They can be solved via the introduction of complex resolvents and the use of complex analysis. We retrieve results obtained recently for -1 =< c =< 0, and we explain and cure their pathologies when they are continued naively to 0 < c < 1. Moreover, for any -1 =< c < 1, we derive closed-form expressions for the shapes of steady isolated flame crests, and then bicoalesced periodic fronts. These theoretical results fully agree with numerical resolutions. Open problems are evoked.
description: v2: 29 pages, 6 figures, some typos corrected
Andreas Sohn, Jacques Verger (dir.), Le cardinal Franz Ehrle (1845–1935)/Franz Kardinal Ehrle (1845–1935). Jésuite, historien et préfet de la Bibliothèque vaticane/Jesuit, Historiker und Präfekt der Vatikanischen Bibliothek, 2018
Creators: name: Hinkel, Sascha
Publisher: name: Francia-Recensio
Year: 2019

description: Andreas Sohn, Jacques Verger (dir.), Le cardinal Franz Ehrle (1845–1935)/Franz Kardinal Ehrle (1845–1935). Jésuite, historien et préfet de la Bibliothèque vaticane/Jesuit, Historiker und Präfekt der Vatikanischen Bibliothek. Actes du colloque de Rome (19–20 février 2015/Akten der Tagung in Rom (19.–20. Februar 2015), Rome (École française de Rome) 2018, 351 p. (Collection de l’École française de Rome, 551), ISBN 978-2-7283-1328-0, EUR 27,00.
description: Francia-Recensio, 2019/3
Generalized Rashba Electron-Phonon Coupling and Superconductivity in Strontium Titanate
Creators: name: Gastiasoro, Maria N.
name: Temperini, Maria Eleonora
name: Barone, Paolo
name: Lorenzana, Jose
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: SrTiO3 is known for its proximity to a ferroelectric phase and for showing an 'optimal' doping for superconductivity with a characteristic dome-like behaviour resembling systems close to a quantum critical point. Several mechanisms have been proposed to link these phenomena, but the abundance of undetermined parameters prevents a definite assessment. Here, we use ab initio computations supplemented with a microscopic model to study the linear coupling between conduction electrons and the ferroelectric soft transverse modes allowed in the presence of spin-orbit coupling. We find a robust Rashba-like coupling, which can become surprisingly strong for particular forms of the polar eigenvector. We characterize this sensitivity for general eigenvectors and, for the particular form deduced by hyper-Raman scattering experiments, we find a BCS pairing coupling constant of the right order of magnitude to support superconductivity. The ab initio computations enable us to go beyond the linear-in-momentum conventional Rashba-like interaction and naturally explain the dome behaviour including a characteristic asymmetry. The dome is attributed to a momentum dependent quenching of the angular momentum due to a competition between spin-orbit and hopping energies. The optimum density for having maximum Tc results in rather good agreement with experiments without free parameters. These results make the generalized Rashba dynamic coupling to the ferroelectric soft mode a compelling pairing mechanism to understand bulk superconductivity in doped SrTiO3.
description: 18 pages, 8 figures
Florian Reichenberger, Der gedachte Krieg. Vom Wandel der Kriegsbilder in der Bundeswehr, Berlin, Boston (De Gruyter Oldenbourg) 2018
Creators: name: Genton, François
Publisher: name: Francia-Recensio
Year: 2019

description: Florian Reichenberger, Der gedachte Krieg. Vom Wandel der Kriegsbilder in der Bundeswehr, Berlin, Boston (De Gruyter Oldenbourg) 2018, XII–498 S., zahlr. farb. Abb., Kt. (Sicherheitspolitik und Streitkräfte der Bundesrepublik Deutschland, 13), ISBN 978-3-11-046260-9, EUR 49,95.
description: Francia-Recensio, 2019/3
title: Editorial
Creators: name: Smith, Mark
Publisher: name: Strathprints - University of Strathclyde
Year: 2016

description: Ten years ago it would have been highly unlikely to be publishing a journal issue on a theme of love in the context of children in out of home care. It would have been considered just too left field, dangerous even, in a context of intense anxiety over child abuse. That wider climate has not changed significantly and, if anything, has become more fevered on the back of the Jimmy Savile1 case. What has changed, though, is that sufficient numbers of practitioners, care leavers and academics are developing the confidence to say what is patently obvious to them, both experientially and conceptually - that love is an inevitable feature of child and youth care and is generally a positive one. Jennifer Vincent’s article, which opens this issue, highlights that the importance of love in direct care and educational contexts is recognised and robustly articulated across a range of people professions. Keith White, in the following article, makes the case that someone must use the word love responsibly and healthily in relation to children.
Tan's two-body contact in a planar Bose gas: experiment vs theory
Creators: name: Rançon, Adam
name: Dupuis, Nicolas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We determine the two-body contact in a planar Bose gas confined by a transverse harmonic potential, using the nonperturbative functional renormalization group. We use the three-dimensional thermodynamic definition of the contact where the latter is related to the derivation of the pressure of the quasi-two-dimensional system with respect to the three-dimensional scattering length of the bosons. Without any free parameter, we find a remarkable agreement with the experimental data of Zou {\it et al.} [Nat. Comm. {\bf 12}, 760 (2021)] from low to high temperatures, including the vicinity of the Berezinskii-Kosterlitz-Thouless transition. We also show that the short-distance behavior of the pair distribution function and the high-momentum behavior of the momentum distribution are determined by two contacts: the three-dimensional contact for length scales smaller than the characteristic length $\ell_z=\sqrt{\hbar/mω_z}$ of the harmonic potential and, for length scales larger than $\ell_z$, an effective two-dimensional contact, related to the three-dimensional one by a geometric factor depending on $\ell_z$.
description: v1) 6+10 pages, 2+1 figures; v2) 6+12 pages, 2+4 figures, published version
Size-biased permutation of a finite sequence with independent and identically distributed terms
Creators: name: Pitman, Jim
name: Tran, Ngoc M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: This paper focuses on the size-biased permutation of $n$ independent and identically distributed (i.i.d.) positive random variables. This is a finite dimensional analogue of the size-biased permutation of ranked jumps of a subordinator studied in Perman-Pitman-Yor (PPY) [Probab. Theory Related Fields 92 (1992) 21-39], as well as a special form of induced order statistics [Bull. Inst. Internat. Statist. 45 (1973) 295-300; Ann. Statist. 2 (1974) 1034-1039]. This intersection grants us different tools for deriving distributional properties. Their comparisons lead to new results, as well as simpler proofs of existing ones. Our main contribution, Theorem 25 in Section 6, describes the asymptotic distribution of the last few terms in a finite i.i.d. size-biased permutation via a Poisson coupling with its few smallest order statistics.
description: Published at http://dx.doi.org/10.3150/14-BEJ652 in the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Ausstellungskalender
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 14 Nr. 6 (1961): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Regularity conditions in the CLT for linear eigenvalue statistics of Wigner matrices
Creators: name: Sosoe, Philippe
name: Wong, Percy
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We show that the variance of centred linear statistics of eigenvalues of GUE matrices remains bounded for large $n$ for some classes of test functions less regular than Lipschitz functions. This observation is suggested by the limiting form of the variance (which has previously been computed explicitly), but it does not seem to appear in the literature. We combine this fact with comparison techniques following Tao-Vu and Erdös, Yau, et al. and a Littlewood-Paley type decomposition to extend the central limit theorem for linear eigenvalue statistics to functions in the Hölder class $C^{1/2+ε}$ in the case of matrices of Gaussian convolution type. We also give a variance bound which implies the CLT for test functions in the Sobolev space $H^{1+ε}$ and $C^{1-ε}$ for general Wigner matrices satisfying moment conditions. Previous results on the CLT impose the existence and continuity of at least one classical derivative.
description: 51 pages, 3 figures. Minor corrections
Tafeln
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 14 Nr. 7 (1961): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
The Saturation of Several Universal Inequalities in Information-Processing
Creators: name: Zhang, Lin
name: Wu, Junde
name: Fei, Shao-Ming
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper, we characterize the saturation of four universal inequalities in quantum information theory, including a variant version of strong subadditivity inequality for von Neumann entropy, the coherent information inequality, the Holevo quantity and average entropy inequalities. These results shed new light on quantum information inequalities.
description: v1: 8 pages, LaTeX, any comments are welcome! v2: 10 pages, the title is changed
Correlation between the nuclear structure and reaction dynamics of Ar-isotopes as projectile using the relativistic mean-field approach
Creators: name: Das, Monalisa
name: Majekodunmi, J. T.
name: Biswal, N.
name: Panda, R. N.
name: Bhuyan, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: This theoretical study is devoted to bridging the gap between the nuclear structure and reaction dynamics and unravelling their impact on each other, considering the neutron-rich light mass 30-60Ar isotopes. Using the relativistic mean-field with the NL3* parameter set, several bulk properties such as binding energies, charge radii, quadrupole deformation parameter, two neutron separation energy, and differential two neutron separation energy with the shell closure parameter are probed for the mentioned isotopic chain. For validation, the RMF (NL3*) results are compared with those obtained from the finite range droplet model (FRDM), Weizsacker-Skyrme model with WS3, WS* parameters and the available experimental data. Most of the participating isotopes are found to be prolate in structure and neutron shell closures are conspicuously revealed at N=14, 20, 40 but weakly shown at N=24, 28, 34. From our analysis, a central depletion in the nucleonic density is identified in 32Ar and 42-58Ar, indicating them as possible candidates for a semi-bubble-like structure. Interestingly, these results are consistent with recent theoretical and experimentally measured data. Besides, using the Glauber model, the reaction cross-sections are determined by taking 26-48Ar as projectiles and stable targets such as 12C, 16O, 40Ca, 90Zr, 124,132Sn, 208Pb and 304120. Although there is no experimental evidence for the stability of 304120, it has been predicted in Ref. [Mod. Phys. Lett. A {\bf 27}, 1250173 (2012)] as a stable nucleus. A relatively higher cross-section value is noticed between 30Ar and 32Ar which infers that 32Ar is the most stable isotope among the considered chain. Moreover, we noticed that the profile of the differential cross-sections and scattering angle are highly influenced by the mass of the target nuclei and the magnitude of the incident energy of the projectile nucleus.
description: 19 pages, 7 figures
Klaus Malettke, Richelieu. Ein Leben im Dienste des Königs und Frankreichs, Paderborn (Ferdinand Schöningh) 2018
Creators: name: Tricoire, Damien
Publisher: name: Francia-Recensio
Year: 2019

description: Klaus Malettke, Richelieu. Ein Leben im Dienste des Königs und Frankreichs, Paderborn (Ferdinand Schöningh) 2018, 1076 S., 10 Abb., 24 s/w Kart., ISBN 978-3-506-77735-5, EUR 128,00.
description: Francia-Recensio, 2019/3
Fine Structure of Excitons in Vacancy Ordered Halide Double Perovskites
Creators: name: Cucco, Bruno
name: Katan, Claudine
name: Even, Jacky
name: Kepenekian, Mikael
name: Volonakis, George
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Vacancy ordered halide double perovskites (VODP) have been widely explored throughout the past few years as promising lead-free alternatives for optoelectronic applications. Yet, the atomic-scale mechanisms that underlie their optical properties remain elusive. In this work, a throughout investigation of the excitonic properties of key members within the VODP family is presented. We employ ab-initio calculations and unveil critical details regarding the role of electron-hole interactions in the electronic and optical properties of VODP. The materials family is sampled based on the electronic configuration of the tetravalent metal at the center of the octahedron. Hence, groups with a valence comprised of s, p and d closed-shells are represented by the known materials Cs$_{2}$SnX$_{6}$, Cs$_{2}$TeX$_{6}$ and Cs$_{2}$ZrX$_{6}$ (with X=Br, I), respectively. The electronic structure is investigated within the G$_{0}$W$_{0}$ method, while the Bethe-Salpeter equation is solved to account for electron-hole interactions that play a crucial role in the optical properties of the family. A detailed symmetry analysis unravels the fine structure of excitons for all compounds. The exciton binding energy, excitonic wavefunctions and the dark-bright splitting are also reported for each material. It is shown that these quantities can be tuned over a wide range, form Wannier to Frenkel-type excitons, through for example substitutional engineering. In particular, Te-based materials, which share the electronic valency of corner-sharing Pb halide perovskites, are predicted to have exciton binding energies of above 1 eV and a dark-bright splitting of the excitons reaching over 100 meV. Our findings provide a fundamental understanding of the optical properties of the entire family of VODP materials and highlight how these are not in fact suitable Pb-free alternatives to traditional halide perovskites.
Relative ergodic properties of C*-dynamical systems
Creators: name: Duvenhage, Rocco
name: Mukhamedov, Farrukh
Publisher: name: arXiv
Year: 2012
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L55, 46L51, 28D05, 60J99

description: We study various ergodic properties of C*-dynamical systems inspired by unique ergodicity. In particular we work in a framework allowing for ergodic properties defined relative to various subspaces, and in terms of weighted means. Our main results are characterizations of such relative ergodic properties, ergodic theorems resulting from these properties, and examples exhibiting these properties.
description: v1: 21 pages. v2: published version, 23 pages
Strong decays of $P_ψ^N(4312)^+$ to $J/ψ(η_c) p$ and $\bar D^{(*)}Λ_c$ within the Bethe-Salpeter framework
Creators: name: Li, Qiang
name: Chang, Chao-Hsi
name: Wang, Tianhong
name: Wang, Guo-Li
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Based on the effective Lagrangian in the heavy quark limit, we calculate the one-boson-exchange interaction kernel of $P_ψ^N(4312)^+$ as the $\bar DΣ_c$ molecular state in isospin-$\frac12$. We present the Bethe-Salpeter equation and wave function for the constituent particles to be a (pseudo)scalar meson and a $\frac12$ baryon. By solving the Bethe-Salpeter equation, we obtain $P_ψ^N(4312)^+$ as the $\bar DΣ_c$ molecular state with $J^P=(\frac{1}{2})^-$. Combining the effective Lagrangian and the obtained BS wave function, the partial decay widths of $P_ψ^N(4312)^+$ to $J/ψp$, $η_c p$, $\bar D^{*0}Λ_c^+$ and $\bar D^0Λ_c^+$ are calculated to be $0.17$, $0.085$, $8.8$, and $0.026$ MeV, respectively, which are roughly consistent with the LHCb experimental measurements and some other theoretical researches. The obtain results indicate the fraction of $\bar D^{*0}Λ_c^+$ channel amounts to $\sim90\%$ of $P_ψ^N(4312)^+$, and is a highly promising channel to be discovered in the near future experiments. Our results favor the interpretation of $P_ψ^N(4312)^+$ as the $\bar DΣ_c$ molecular state with $J^P=(\frac{1}{2})^-$ and isospin $I=\frac12$.
description: 28 pages, 7 figures
On the motivic spectral sequence
Creators: name: Garkusha, Grigory
name: Panin, Ivan
Publisher: name: arXiv
Year: 2012
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 19E08, 55T99

description: It is shown that the Grayson tower for $K$-theory of smooth algebraic varieties is isomorphic to the slice tower of $S^1$-spectra. We also extend the Grayson tower to bispectra and show that the Grayson motivic spectral sequence is isomorphic to the motivic spectral sequence produced by the Voevodsky slice tower for the motivic $K$-theory spectrum $KGL$. This solves Suslin's problem for these two spectral sequences in the affirmative.
description: This is the final revised version
Stephan Meder, Der unbekannte Leibniz. Die Entdeckung von Recht und Politik durch Philosophie, Wien, Köln, Weimar (Böhlau) 2018
Creators: name: Losfeld, Christophe
Publisher: name: Francia-Recensio
Year: 2019

description: Stephan Meder, Der unbekannte Leibniz. Die Entdeckung von Recht und Politik durch Philosophie, Wien, Köln, Weimar (Böhlau) 2018, 386 S., ISBN 978-3-412-50063-4, EUR 55,00.
description: Francia-Recensio, 2019/3
Hyperbolic-parabolic normal form and local classical solutions for cross-diffusion systems with incomplete diffusion
Creators: name: Druet, Pierre-Étienne
name: Hopf, Katharina
name: Jüngel, Ansgar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We investigate degenerate cross-diffusion equations with a rank-deficient diffusion matrix that are considered to model populations which move as to avoid spatial crowding and have recently been found to arise in a mean-field limit of interacting stochastic particle systems. To date, their analysis in multiple space dimensions has been confined to the purely convective case with equal mobility coefficients. In this article, we introduce a normal form for an entropic class of such equations which reveals their structure of a symmetric hyperbolic--parabolic system. Due to the state-dependence of the range and kernel of the singular diffusive matrix, our way of rewriting the equations is different from that classically used for symmetric second-order systems with a nullspace invariance property. By means of this change of variables, we solve the Cauchy problem for short times and positive initial data in $H^s(\mathbb{T}^d)$ for $s>d/2+1$.
Group structures of elliptic curves over finite fields
Creators: name: Chandee, Vorrapan
name: David, Chantal
name: Koukoulopoulos, Dimitris
name: Smith, Ethan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: It is well-known that if $E$ is an elliptic curve over the finite field $\mathbb{F}_p$, then $E(\mathbb{F}_p)\simeq\mathbb{Z}/m\mathbb{Z}\times\mathbb{Z}/mk\mathbb{Z}$ for some positive integers $m, k$. Let $S(M,K)$ denote the set of pairs $(m,k)$ with $m\le M$ and $k\le K$ such that there exists an elliptic curve over some prime finite field whose group of points is isomorphic to $\mathbb{Z}/m\mathbb{Z}\times\mathbb{Z}/mk\mathbb{Z}$. Banks, Pappalardi and Shparlinski recently conjectured that if $K\le (\log M)^{2-ε}$, then a density zero proportion of the groups in question actually arise as the group of points on some elliptic curve over some prime finite field. On the other hand, if $K\ge (\log M)^{2+ε}$, they conjectured that a density one proportion of the groups in question arise as the group of points on some elliptic curve over some prime finite field. We prove that the first part of their conjecture holds in the full range $K\le (\log M)^{2-ε}$, and we prove that the second part of their conjecture holds in the limited range $K\ge M^{4+ε}$. In the wider range $K\ge M^2$, we show that a positive density of the groups in question actually occur.
description: 15 pages. Final version, published in IMRN. Some minor changes
Damien Tricoire, Der koloniale Traum. Imperiales Wissen und die französisch-madagassischen Begegnungen im Zeitalter der Aufklärung, Köln, Weimar, Wien (Böhlau) 2018
Creators: name: Bechtold, Jonas
Publisher: name: Francia-Recensio
Year: 2019

description: Damien Tricoire, Der koloniale Traum. Imperiales Wissen und die französisch-madagassischen Begegnungen im Zeitalter der Aufklärung, Köln, Weimar, Wien (Böhlau) 2018, 432 S., 23 Abb. (Externa. Geschichte der Außenbeziehungen in neuen Perspektiven, 13), ISBN 978-3-412-51131-9, EUR 65,00.
description: Francia-Recensio, 2019/3
Compressed sensing with sparse, structured matrices
Creators: name: Angelini, Maria Chiara
name: Ricci-Tersenghi, Federico
name: Kabashima, Yoshiyuki
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In the context of the compressed sensing problem, we propose a new ensemble of sparse random matrices which allow one (i) to acquire and compress a ρ0-sparse signal of length N in a time linear in N and (ii) to perfectly recover the original signal, compressed at a rate α, by using a message passing algorithm (Expectation Maximization Belief Propagation) that runs in a time linear in N. In the large N limit, the scheme proposed here closely approaches the theoretical bound ρ0 = α, and so it is both optimal and efficient (linear time complexity). More generally, we show that several ensembles of dense random matrices can be converted into ensembles of sparse random matrices, having the same thresholds, but much lower computational complexity.
description: 7 pages, 6 figures
Joule-Thomson effect of AdS black holes in conformal gravity
Creators: name: Guo, Yang
name: Xie, Hao
name: Miao, Yan-Gang
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the Joule-Thomson effect of AdS black holes in conformal gravity. We derive the Joule-Thomson coefficient in terms of thermodynamic relations and then make an alternative derivation via a direct way. We analyze the Joule-Thomson coefficient and find that the Joule-Thomson coefficients obtained from two different approaches are equal. Moreover, we present a novel isenthalpic process in which the inversion temperature is minimal and it separates the corresponding heating-cooling phase. We analyze the inversion temperature and its corresponding inversion curve that separates the regions for the JT effect to be allowable and forbidden, where such an effect can only be observed in the allowable region. We also discuss the effects of two important parameters on the inversion curves.
description: v1: 10 pages, 4 figures; v2: 11 pages, clarifications and references added, final version to appear in Nuclear Physics B
Improved limits on the coupling of ultralight bosonic dark matter to photons from optical atomic clock comparisons
Creators: name: Filzinger, M.
name: Dörscher, S.
name: Lange, R.
name: Klose, J.
name: Steinel, M.
name: Benkler, E.
name: Peik, E.
name: Lisdat, C.
name: Huntemann, N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present improved constraints on the coupling of ultralight bosonic dark matter to photons based on long-term measurements of two optical frequency ratios. In these optical clock comparisons, we relate the frequency of the ${}^2S_{1/2} (F=0)\leftrightarrow {}^2F_{7/2} (F=3)$ electric-octupole (E3) transition in $^{171}$Yb$^{+}$ to that of the ${}^2S_{1/2} (F=0)\leftrightarrow \,{}^2D_{3/2} (F=2)$ electric-quadrupole (E2) transition of the same ion, and to that of the ${}^1S_0\leftrightarrow\,{}^3P_0$ transition in $^{87}$Sr. Measurements of the first frequency ratio $ν_\textrm{E3}/ν_\textrm{E2}$ are performed via interleaved interrogation of both transitions in a single ion. The comparison of the single-ion clock based on the E3 transition with a strontium optical lattice clock yields the second frequency ratio $ν_\textrm{E3}/ν_\textrm{Sr}$. By constraining oscillations of the fine-structure constant $α$ with these measurement results, we improve existing bounds on the scalar coupling $d_e$ of ultralight dark matter to photons for dark matter masses in the range of about $ 10^{-24}-10^{-17}\,\textrm{eV}/c^2$. These results constitute an improvement by more than an order of magnitude over previous investigations for most of this range. We also use the repeated measurements of $ν_\textrm{E3}/ν_\textrm{E2}$ to improve existing limits on a linear temporal drift of $α$ and its coupling to gravity.
description: 7 pages, 5 figures
Black Holes: Complementarity or Firewalls?
Creators: name: Almheiri, Ahmed
name: Marolf, Donald
name: Polchinski, Joseph
name: Sully, James
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We argue that the following three statements cannot all be true: (i) Hawking radiation is in a pure state, (ii) the information carried by the radiation is emitted from the region near the horizon, with low energy effective field theory valid beyond some microscopic distance from the horizon, and (iii) the infalling observer encounters nothing unusual at the horizon. Perhaps the most conservative resolution is that the infalling observer burns up at the horizon. Alternatives would seem to require novel dynamics that nevertheless cause notable violations of semiclassical physics at macroscopic distances from the horizon.
description: 22 pages, 1 figure. v2: We have not changed our minds. Various arguments are expanded and sharpened. v3: Relation to previous work clarified. v4: Additional reference to earlier work
U-Turns in Pakistani Politics: A Complex Game of Political Chess
Creators: name: Zaman, Khalid
Publisher: name: figshare
Year: 2023
Subjects: Government and politics of Asia and the Pacific

description: The present study investigates the occurrence of political U-turns in Pakistan by examining the most prominent politicians and their associated political parties. According to research, the phenomenon of 'political U-turns' has a detrimental impact on Pakistan's development and stability. This tendency also erodes public trust in the government and impedes progress towards improved economic and social conditions. Pakistan's legislators and policymakers must prioritise the country's long-term interests over their individual or party's immediate gains. For governments to secure the backing and trust of their constituents, they must exhibit greater transparency and accountability towards them. Ensuring the expression of individuals' viewpoints necessitates holding elected representatives responsible and actively engaging in the political sphere. This study highlights the imperative requirement for cooperation among all pertinent stakeholders in Pakistan to tackle the problem of 'political U-turns' and promote the nation's stability and progress.
Ulrike Keuper, Reproduktion als Übersetzung. Eine Metapher und ihre Folgen – vom Salonbericht bis zur frühen Fotokritik, Paderborn (Wilhelm Fink Verlag) 2018
Creators: name: Keller, Thomas
Publisher: name: Francia-Recensio
Year: 2019

description: Ulrike Keuper, Reproduktion als Übersetzung. Eine Metapher und ihre Folgen – vom Salonbericht bis zur frühen Fotokritik, Paderborn (Wilhelm Fink Verlag) 2018, VI–249 S., 6 farb. Abb., ISBN 978-3-7705-6311-1, EUR 49,90.
description: Francia-Recensio, 2019/3
Group schemes and local densities of ramified hermitian lattices in residue characteristic 2 Part I
Creators: name: Cho, Sungmun
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11E41, 11E95, 14L15, 20G25 (Primary), 11E39, 11E57 (Secondary)

description: The obstruction to the local-global principle for a hermitian lattice (L, H) can be quantified by computing the mass of (L, H). The mass formula expresses the mass of (L, H) as a product of local factors, called the local densities of (L, H). The local density formula is known except in the case of a ramified hermitian lattice of residue characteristic 2. Let F be a finite unramified field extension of Q_2. Ramified quadratic extensions E/F fall into two cases that we call Case 1 and Case 2. In this paper, we obtain the local density formula for a ramified hermitian lattice in Case 1, by constructing a smooth integral group scheme model for an appropriate unitary group. Consequently, this paper, combined with the paper of W. T. Gan and J.-K. Yu, allows the computation of the mass formula for a hermitian lattice (L, H) in Case 1.
description: 70 pages. The previous version is divided into two papers (Case 1 and Case 2). The current version is for Case 1 and its final version (for Case 1) is to appear in Algebra & Number Theory
Tunable Three-Dimensional Architecture of Nematic Disclination Lines
Creators: name: Modin, Alvin
name: Ash, Biswarup
name: Ishimoto, Kelsey
name: Leheny, Robert L.
name: Serra, Francesca
name: Aharoni, Hillel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Disclinations lines play a key role in many physical processes, from the fracture of materials to the formation of the early universe. Achieving versatile control over disclinations is key to developing novel electro-optical devices, programmable origami, directed colloidal assembly, and controlling active matter. Here, we introduce a theoretical framework to tailor three-dimensional disclination architecture in nematic liquid crystals experimentally. We produce quantitative predictions for the connectivity and shape of disclination lines found in nematics confined between two thinly spaced glass substrates with strong planar anchoring. By drawing an analogy between nematic liquid crystals and magnetostatics, we find that: i) disclination lines connect defects with the same topological charge on opposite surfaces, and ii) disclination lines are attracted to regions of the highest twist. Using polarized light to pattern the in-plane alignment of liquid crystal molecules, we test these predictions experimentally and identify critical parameters that tune the disclination lines' curvature. We verify our predictions with computer simulations and find non-dimensional parameters enabling us to match experiments and simulations at different length scales. Our work provides a powerful method to understand and practically control defect lines in nematic liquid crystals.