cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Top anomalous magnetic moment and the two photon decay of Higgs
Creators: name: Labun, Lance
name: Rafelski, Johann
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We compute the dependence of the Higgs to two-photon decay rate $Γ_{h\to γγ}$ on the top quark gyromagnetic factor $g_t$ in the heavy top limit and evaluate the expected change for one-loop SM correction to $g_t$. Our results are general and allow consideration of further modifications of $g_t$ and we predict the resultant $Γ_{h\to γγ}$.
description: 4 pages, 2 figures; v2, plot of decay rate expanded range; v3, updated with recent experimental results, removed plot of beta-function
Rembrandt, the Jews and the Bible
Creators: name: Roosen-Runge, Heinz
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Rezension zu: Franz Landsberger, Rembrandt, the Jews and the Bible. Philadelphia 1946.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Vol 3 No 1 (1950): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Ausstellungskalender
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Vol 3 No 1 (1950): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Neue Ausgrabungen zur mittelalterlichen Baugeschichte
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 3 Nr. 2 (1950): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
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. 3 Nr. 2 (1950): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Heavy-quark transport coefficients in a hot viscous quark-gluon plasma medium
Creators: name: Das, Santosh K.
name: Chandra, Vinod
name: Alam, Jan-e
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The heavy-quark (HQ) transport coefficients have been estimated for a viscous quark-gluon plasma medium, utilizing a recently proposed quasi-particle description based on realistic QGP equation of state (EoS). Interactions entering through the equation of state significantly suppress the temperature dependence of the drag coefficient of QGP as compared to that of an ideal system of quarks and gluons. Inclusion of shear and bulk viscosities through the corrections to the thermal phase space factors of the bath particles alters the magnitude of the drag coefficient and the enhancement is significant at lower temperatures. The competition between the effects of realistic EoS and dissipative corrections through phase space factor the former eventually dictate how the drag coefficient would behave as a function of temperature, and how much quantitatively digress from the ideal case. The observations suggest significant impact of both the realistic equation of state, and the viscosities, on the HQs transport at RHIC and the LHC collision energies.
description: To be published in J. Phys. G
Strong spin-dependent negative differential resistance in composite graphene superlattices
Creators: name: Munárriz, J.
name: Gaul, C.
name: Malyshev, A. V.
name: Orellana, P. A.
name: Müller, C. A.
name: Domínguez-Adame, F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We find clear signatures of spin-dependent negative differential resistance in compound systems comprising a graphene nanoribbon and a set of ferromagnetic insulator strips deposited on top of it. The periodic array of ferromagnetic strips induces a proximity exchange splitting of the electronic states in graphene, resulting in the appearance of a superlattice with a spin-dependent energy spectrum. The electric current through the device can be highly polarized and both the current and its polarization manifest non-monotonic dependence on the bias voltage. The device operates therefore as an Esaki spin diode, which opens possibilities to design new spintronic circuits.
description: 7 pages, 5 figures
Augmented projections for ptychographic imaging
Creators: name: Marchesini, Stefano
name: Schirotzek, Andre
name: Yang, Chao
name: Wu, Hau-tieng
name: Maia, Filipe
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Ptychography is a popular technique to achieve diffraction limited resolution images of a two or three dimensional sample using high frame rate detectors. We introduce a relaxation of common projection algorithms to account for instabilities given by intensity and background fluctuations, position errors, or poor calibration using multiplexing illumination. This relaxation introduces an additional phasing optimization at every step that enhances the convergence rate of common projection algorithms. Numerical tests exhibit the exact recovery of the object and the noise when there is high redundancy in the data.
description: 18 pages, 12 figures
Infinite boundary conditions for matrix product state calculations
Creators: name: Phien, Ho N.
name: Vidal, Guifre
name: McCulloch, Ian P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a formalism to study dynamical properties of a quantum many-body system in the thermodynamic limit by studying a finite system with infinite boundary conditions (IBC) where both finite size effects and boundary effects have been eliminated. For one-dimensional systems, infinite boundary conditions are obtained by attaching two boundary sites to a finite system, where each of these two sites effectively represents a semi-infinite extension of the system. One can then use standard finite-size matrix product state techniques to study a region of the system while avoiding many of the complications normally associated with finite-size calculations such as boundary Friedel oscillations. We illustrate the technique with an example of time evolution of a local perturbation applied to an infinite (translationally invariant) ground state, and use this to calculate the spectral function of the S=1 Heisenberg spin chain. This approach is more efficient and more accurate than conventional simulations based on finite-size matrix product state and density-matrix renormalization-group approaches.
description: 10 pages
The renormalized locally covariant Dirac field
Creators: name: Zahn, Jochen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The definition of the locally covariant Dirac field is adapted such that it may be charged under a gauge group and in the presence of generic gauge and Yukawa background fields. We construct renormalized Wick powers and time-ordered products. It is shown that the Wick powers may be defined such that the current and the stress-energy tensor are conserved, and the remaining ambiguity is characterized. We sketch a variant of the background field method that can be used to determine the renormalization group flow at the one loop level from the nontrivial scaling of Wick powers.
description: 40 pages. v2: Corrections is Sections 4.1 and 4.2. v3: Section 3.1 reworked, final version
Veit Rosenberger, Bella et expeditiones. Die antike Terminologie der Kriege Roms
Creators: name: Eder, Walter
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Veit Rosenberger, Bella et expeditiones. Die antike Terminologie der Kriege Roms. Heidelberger Althistorische Beiträge und Epigraphische Studien, Band 12. Franz Steiner Verlag, Stuttgart 1992. 203 Seiten
description: Bonner Jahrbücher, Bd. 194.1994 (1995): Bonner Jahrbücher
Antiscreening in perturbative quantum gravity and resolving the Newtonian singularity
Creators: name: Marunovic, Anja
name: Prokopec, Tomislav
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We calculate the quantum corrections to the Newtonian potential induced by a massless, nonminimally coupled scalar field on Minkowski background. We make use of the graviton vacuum polarization calculated in our previous work and solve the equation of motion nonperturbatively. When written as the quantum-corrected gauge invariant Bardeen potentials, our results show that quantum effects generically antiscreen the Newtonian singularity 1/r. This result supports the point of view that gravity on (super-)Planckian scales is an asymptotically safe theory. In addition, we show that, in the presence of quantum fluctuations of a massless, (non)minimally coupled scalar field, dynamical gravitons propagate superluminally. The effect is, however, unbservably small and it is hence of academic interest only.
description: 17 pages, 7 figures; a discussion of the relation to the Barvinsky-Vilkovisky formalism is included in v2; matches published version
ERGA Pilot Project Assembly Recommendations
Creators: name: Cartney, Ann M. Mc
name: Formenti, Giulio
name: Alioto, Tyler
name: Guiglielmoni, Nadège
name: Howe, Kerstin
name: Wood, Jonathon
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Genomics
Genome Assembly
ERGA-Pilot
Genomics Sequencing
Eukaryote

description: This document contains the assembly recommendations issued during the European Reference Genome Atlas' Pilot Project.
Derivation of effective macroscopic Stokes-Cahn-Hilliard equations for periodic immiscible flows in porous media
Creators: name: Schmuck, Markus
name: Pradas, Marc
name: Pavliotis, Gregorios A.
name: Kalliadasis, Serafim
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Classical Physics (physics.class-ph)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Using thermodynamic and variational principles we examine a basic phase field model for a mixture of two incompressible fluids in strongly perforated domains. With the help of the multiple scale method with drift and our recently introduced splitting strategy for Ginzburg-Landau/Cahn-Hilliard-type equations [Schmuck et al., Proc. R. Soc. A 468:3705-3724, 2012.], we rigorously derive an effective macroscopic phase field formulation under the assumption of periodic flow and a sufficiently large Péclet number. As for classical convection-diffusion problems, we obtain systematically diffusion-dispersion relations (including Taylor-Aris-dispersion). Our results also provide a convenient analytical and computational framework to macroscopically track interfaces in porous media. In view of the well-known versatility of phase field models, our study proposes a promising model for many engineering and scientific applications such as multiphase flows in porous media, microfluidics, and fuel cells.
description: 25 pages, 5 figures
Policy Brief 2: Recommendations. Justice in Environmental and Social Impact Assessments
Creators: name: JUSTNORTH
Publisher: name: Zenodo
Year: 2023
Subjects: Arctic economies, Economic development, Sustainable development, Values

description: Factor in injustices and legacies of past harm so as to be able to engage with actual social complexity
Widen the scope of what forms of knowledge are included, not least by recognizing indigenous knowledge
In the European Arctic, incorporate an analysis of social impacts (inspired by North American practices)
Pay specific attention to the needs of vulnerable groups
Generalizing thawing dark energy models: the standard vis-à-vis model independent diagnostics
Creators: name: Adak, Debabrata
name: Majumdar, Debasish
name: Pal, Supratik
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We propose a two parameter generalization for the dark energy equation of state (EOS) $w_X$ for thawing dark energy models which includes PNGB, CPL and Algebraic thawing models as limiting cases and confront our model with the latest observational data namely SNe Ia, OHD, CMB, BOSS data. Our analysis reveals that the phantom type of thawing dark energy is favoured upto $2 σ$ confidence level. These results also show that thawing dark energy EOS is not unique from observational point of view. Though different thawing dark energy models are not distinguishable from each other from best-fit values (upto $2σ$ C.L.s) of matter density parameter ($Ω_m^0$) and hubble parameter ($H_0$) at present epoch, best-fit plots of linear growth of matter perturbation ($f$) and average deceleration parameter ($q_{\rm av}$); the difference indeed reflects in best-fit variations of thawing dark energy EOS, model-independent geometrical diagnostics like the statefinder pair $\{r,s\}$ and $Om3$ parameter. We are thus led to the conclusion that unlike the standard observables ($Ω_m^0$, $H_0$, $f$, $q_{\rm av}$), the model-independent parameters ($r,s,Om3$) and the variations of EOS (in terms of $w_X-w_X'$ plots) serve as model discriminators for thawing dark energy models.
description: 13 pages LaTeX, 14 postscript figures. Accepted for publication in MNRAS
Appendix from Computational capability of ecological dynamics
Creators: name: Ushio, Masayuki
name: Watanabe, Kazufumi
name: Fukuda, Yasuhiro
name: Tokudome, Yuji
name: Nakajima, Kohei
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences
subject: Computational Biology

description: Illustrated explanations of ERC procedures
Diagonal patterns and chevron effect in intersecting traffic flows
Creators: name: Cividini, Julien
name: Appert-Rolland, Cecile
name: Hilhorst, Hendrik-Jan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study a lattice model of two perpendicular intersecting flows of pedestrians represented by hard core particles of two types, eastbound (`$\pE$') and northbound (`$\pN$'). Each flow takes place on a strip of width $M$ so that the intersection is an $M\times M$ square lattice. In experiment and simulation there occurs on this square spontaneous formation of a diagonal pattern of alternating $\pE$ and $\pN$ particles. We show that this pattern formation may be understood in terms of a linear instability of the corresponding mean field equations. A refined investigation reveals that the pattern actually consists of chevrons rather than straight diagonals. We explain this effect as the consequence of the existence of a nonlinear mode sustained by the interaction between the two types of particles.
Conductivity close to antiferromagnetic criticality
Creators: name: Syzranov, S. V.
name: Schmalian, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the conductivity of a 3D disordered metal close to the antiferromagnetic instability within the framework of the spin-fermion model using the diagrammatic technique. We calculate the interaction correction $δσ(ω,T)$ to the conductivity, assuming that the latter is dominated by the disorder scattering, and the interaction is weak. Although the fermionic scattering rate shows critical behaviour on the entire Fermi surface, the interaction correction is dominated by the processes near the hot spots, narrow regions of the Fermi-surface corresponding to the strongest spin-fermion scattering. Exactly at the critical point $δσ\propto[max(ω, T)]^{3/2}$. At sufficiently large frequencies $ω$ the conductivity is independent of the temperature, and $δσ\propto(τ^{-1}-iω)^{-2}$, $τ$ being the elastic scattering time. In a certain intermediate frequency range $δσ(ω)\propto iω(τ^{-1}-iω)^{-2}$.
description: 4+ pages, 4 figures
On balanced incomplete block designs with specified weak chromatic number
Creators: name: Horsley, Daniel
name: Pike, David A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B05

description: A weak $c$-colouring of a balanced incomplete block design (BIBD) is a colouring of the points of the design with $c$ colours in such a way that no block of the design has all of its vertices receive the same colour. A BIBD is said to be weakly $c$-chromatic if $c$ is the smallest number of colours with which the design can be weakly coloured. In this paper we show that for all $c \geq 2$ and $k \geq 3$ with $(c,k) \neq (2,3)$, the obvious necessary conditions for the existence of a $(v,k,λ)$-BIBD are asymptotically sufficient for the existence of a weakly $c$-chromatic $(v,k,λ)$-BIBD.
description: 26 pages, 0 figures
Addendum to: Milne, Values of zeta functions of varieties over finite fields, Amer. J. Math. 108, (1986), 297-360
Creators: name: Milne, J. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14G10

description: The original article expressed the special values of the zeta function of a variety over a finite field in terms of the $\hat{Z}$-cohomology of the variety. As the article was being completed, Lichtenbaum conjectured the existence of certain motivic cohomology groups. Progress on his conjecture allows one to give a beautiful restatement of the main theorem of the article in terms of $Z$-cohomology groups.
description: October 2013: Improved exposition. Added notes
Accretion into the Central Cavity of a Circumbinary Disk
Creators: name: D'Orazio, Daniel J.
name: Haiman, Zoltán
name: MacFadyen, Andrew
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A near-equal mass binary black hole can clear a central cavity in a circumbinary accretion disk; however, previous works have revealed accretion streams entering this cavity. Here we use 2D hydrodynamical simulations to study the accretion streams and their periodic behavior. In particular, we perform a suite of simulations, covering different binary mass ratios $q=M_2/M_1$ in the range $0.01 \leq q \leq 1$. In each case, we follow the system for several thousand binary orbits, until it relaxes to a stable accretion pattern. We find the following results: (i) while the binary is efficient in maintaining a low-density cavity, the time-averaged mass accretion rate into the cavity, through narrow coherent accretion streams, is suppressed by at most a factor of $\sim 5$, compared to a disk with a single BH with the same mass; (ii) the largest suppression occurs for $q\approx 0.05$; binaries whose mass ratios are either lower or higher both suppress accretion less significantly; (iii) for $q \gtrsim 0.05$, the accretion rate is strongly modulated by the binary, and depending on the precise value of $q$, the power spectrum of the accretion rate shows either one, two, or three distinct periods; and (v) for $q \lesssim 0.05$, the accretion rate becomes steady, with no time-variations. Most binaries produced in galactic mergers are expected to have $q\gtrsim 0.05$. If the luminosity of these binaries tracks their accretion rate, then a periodogram of their light-curve could help in their identification, and to constrain their mass ratio and disk properties.
description: Published in MNRAS
Zur Baugeschichte des Speyerer Doms
Creators: name: Kubach, Hans Erich
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 14 Nr. 1 (1961): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Double handbag description of proton-antiproton annihilation into a heavy meson pair
Creators: name: Goritschnig, A. T.
name: Pire, B.
name: Schweiger, W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We propose to describe the process $ p \bar{p} \,\to\, \bar{D^0} D^0$ in a perturbative QCD motivated framework where a double-handbag hard process $ u d \bar u \bar d \to \bar{c} c$ factorizes from transition distribution amplitudes, which are quasi forward hadronic matrix elements of $Ψ_q Ψ_q Ψ_c $ operators, where q denotes light quarks and c denotes the heavy quark. We advocate that the charm-quark mass acts as the large scale allowing this factorization. We calculate this process in the simplified framework of the scalar diquark model and present the expected cross sections for the PANDA experiment at GSI-FAIR.
description: 25 pages
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. 2 (1961): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
On plane sextics with double singular points
Creators: name: Degtyarev, Alex
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H45, 14H30, 14H50

description: We compute the fundamental groups of five maximizing sextics with double singular points only; in four cases, the groups are as expected. The approach used would apply to other sextics as well, given their equations.
description: A few explanations and references added
Quantum-classical transition of correlations of two coupled cavities
Creators: name: Lee, Tony E.
name: Cross, M. C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study the difference between quantum and classical behavior in a pair of nonidentical cavities with second-harmonic generation. In the classical limit, each cavity has a limit-cycle solution, in which the photon number oscillates periodically in time. Coupling between the cavities leads to synchronization of the oscillations and classical correlations between the cavities. In the quantum limit, there are quantum correlations due to entanglement. The quantum correlations persist even when the cavities are far off resonance with each other, in stark contrast with the classical case. We also find that the quantum and classical limits are connected by an intermediate regime of almost no correlations. Our results can be extended to a wide variety of quantum models.
description: 6 pages, 7 figures
title: Medizinische Begutachtung digitaler Gesundheitsanwendungen im Projekt „Trusted Health Apps“. Bewertungsprojekt: Angst- und Panikstörungen. Anwendung: velibra
Creators: name: Thiele, Christian
Publisher: name: Bertelsmann Stiftung
publisherIdentifier: https://ror.org/01wj9hk44
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Digitale Gesundheitsanwendung
Angststörung
Panikstörung

description: Unsere medizinische Bewertung digitaler Gesundheitsanwendungen (DiGA) zeigt, dass die medizinische Qualität und Unterschiede in ihrer Evidenzlage systematisch und transparent dargestellt werden können. Dies ist ein entscheidender Schritt, um Patientinnen und Patienten sowie der Ärzteschaft und anderen Stakeholdern Orientierung zu bieten.

In diesem Bericht werden die Bewertungsergebnisse der Anwendung „Velibra“ dargestellt.
Fluctuations in the Time Variable and Dynamical Heterogeneity in Glass-Forming Systems
Creators: name: Avila, Karina E.
name: Castillo, Horacio E.
name: Parsaeian, Azita
Publisher: name: arXiv
Year: 2012
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We test a hypothesis for the origin of dynamical heterogeneity in slowly relaxing systems, namely that it emerges from soft (Goldstone) modes associated with a broken continuous symmetry under time reparametrizations. We do this by constructing coarse grained observables and decomposing the fluctuations of these observables into transverse components, which are associated with the postulated time-fluctuation soft modes, and a longitudinal component, which represents the rest of the fluctuations. Our test is performed on data obtained in simulations of four models of structural glasses. As the hypothesis predicts, we find that the time reparametrization fluctuations become increasingly dominant as temperature is lowered and timescales are increased. More specifically, the ratio between the strengths of the transverse fluctuations and the longitudinal fluctuations grows as a function of the dynamical susceptibility, χ4, which represents the strength of the dynamical heterogeneity; and the correlation volumes for the transverse fluctuations are approximately proportional to those for the dynamical heterogeneity, while the correlation volumes for the longitudinal fluctuations remain small and approximately constant.
description: 13 pages, 8 figures
Nonequilibrium Quantum Phase Transitions in the Ising Model
Creators: name: Bastidas, V. M.
name: Emary, C.
name: Schaller, G.
name: Brandes, T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We establish a set of nonequilibrium quantum phase transitions in the Ising model driven under monochromatic nonadiabatic modulation of the transverse field. We show that besides the Ising-like critical behavior, the system exhibits an anisotropic transition which is absent in equilibrium. The nonequilibrium quantum phases correspond to states which are synchronized with the external control in the long-time dynamics.
description: 10 pages, 5 figures. Published in Physical Review A
Laurent Polynomials, GKZ-hypergeometric Systems and Mixed Hodge Modules
Creators: name: Reichelt, Thomas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 32S40 (Primary), 14D07 (Secondary), 32S35

description: Given a family of Laurent polynomials, we will construct a morphism between its (proper) Gauss-Manin system and a direct sum of associated GKZ systems. The kernel and cokernel of this morphism are very simple and consist of free O-modules. The result above enables us to put a mixed Hodge module structure on certain classes of GKZ systems and shows that they have quasi-unipotent monodromy.
description: 34 pages
Non-existence of multiple-black-hole solutions close to Kerr-Newman
Creators: name: Wong, Willie Wai-Yeung
name: Yu, Pin
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 83C22, 83C57

description: We show that a stationary asymptotically flat electro-vacuum solution of Einstein's equations that is everywhere locally "almost isometric" to a Kerr-Newman solution cannot admit more than one event horizon. Axial symmetry is not assumed. In particular this implies that the assumption of a single event horizon in Alexakis-Ionescu-Klainerman's proof of perturbative uniqueness of Kerr black holes is in fact unnecessary.
description: Version 2: improved presentation; no changes to the result. Version 3: corrected an oversight in the historical review. Version 4: version accepted for publication
Classical simulations of Abelian-group normalizer circuits with intermediate measurements
Creators: name: Bermejo-Vega, Juan
name: Nest, Maarten Van den
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Complexity (cs.CC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum normalizer circuits were recently introduced as generalizations of Clifford circuits [arXiv:1201.4867]: a normalizer circuit over a finite Abelian group $G$ is composed of the quantum Fourier transform (QFT) over G, together with gates which compute quadratic functions and automorphisms. In [arXiv:1201.4867] it was shown that every normalizer circuit can be simulated efficiently classically. This result provides a nontrivial example of a family of quantum circuits that cannot yield exponential speed-ups in spite of usage of the QFT, the latter being a central quantum algorithmic primitive. Here we extend the aforementioned result in several ways. Most importantly, we show that normalizer circuits supplemented with intermediate measurements can also be simulated efficiently classically, even when the computation proceeds adaptively. This yields a generalization of the Gottesman-Knill theorem (valid for n-qubit Clifford operations [quant-ph/9705052, quant-ph/9807006] to quantum circuits described by arbitrary finite Abelian groups. Moreover, our simulations are twofold: we present efficient classical algorithms to sample the measurement probability distribution of any adaptive-normalizer computation, as well as to compute the amplitudes of the state vector in every step of it. Finally we develop a generalization of the stabilizer formalism [quant-ph/9705052, quant-ph/9807006] relative to arbitrary finite Abelian groups: for example we characterize how to update stabilizers under generalized Pauli measurements and provide a normal form of the amplitudes of generalized stabilizer states using quadratic functions and subgroup cosets.
description: 26 pages+appendices. Title has changed in this second version. To appear in Quantum Information and Computation, Vol.14 No.3&4, 2014
Signatures of accretion events in the halos of early-type galaxies from comparing PNe and GCs kinematics
Creators: name: Coccato, L.
name: Arnaboldi, M.
name: Gerhard, O.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have compared the halo kinematics traced by globular clusters (GCs) and planetary nebulae (PNe) for two elliptical galaxies in the Fornax and Virgo clusters NGC 1399 and NGC 4649, and for the merger remnant NGC 5128 (Centaurus A). We find differences in the rotational properties of the PN, red GC, and blue GC systems in all these three galaxies. NGC 1399 PNe and GCs show line of sight velocity distributions in specific regions that are significantly different, based on Kolmogorov-Smirnov tests. The PN system shows multi-spin components, with nearly opposite direction of rotation in the inner and the outer parts. The GCs velocity field is not point-symmetric in the outer regions of the galaxy, indicating that the system has not reached dynamical equilibrium yet. In NGC 4649 PNe, red and blue GCs have different rotation axes and rotational velocities. Finally, in NGC 5128 both PNe and GCs deviate from equilibrium in the outer regions of the galaxy, and in the inner regions the PN system is rotationally supported, whereas the GC system is dominated by velocity dispersion. The observed different kinematic properties, including deviations from point-symmetry, between PNe and GCs suggest that these systems are accreted at different times by the host galaxy, and the most recent accretion took place only few Gyr ago.We discuss two scenarios which may explain some of these differences: i) tidal stripping of loosely-bound GCs, and ii) multiple accretion of low luminosity and dwarf galaxies. Because these two mechanisms affect mostly the GC system, differences with the PNe kinematics can be expected.
description: 14 pages, 13 figures, Accepted for publication in MNRAS. This new version contains an improved analysis, which includes the study of point-symmetry in the velocity fields and its implications for dynamical equilibrium
Anomalous Hall effect in heavy electron materials
Creators: name: Yang, Yi-feng
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose a new empirical formula for the anomalous Hall effect in heavy electron materials based on a phenomenological two-fluid description of the f-electron states. The new formula incorporates two previous theories proposed by Fert and Levy in 1987 and Kontani et al. in the early 1990s and takes into account both incoherent and coherent skew scatterings from local and itinerant f-electrons. We perform experimental analysis in several heavy electron compounds and show that the new formula provides a consistent description of the evolution of the Hall coefficient in the whole temperature range down to only a few Kelvin.
description: 6 pages, 4 figures
A Quantum Model for Autonomous Learning Automata
Creators: name: Siomau, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The idea of information encoding on quantum bearers and its quantum-mechanical processing has revolutionized our world and brought mankind on the verge of enigmatic era of quantum technologies. Inspired by this idea, in present paper we search for advantages of quantum information processing in the field of machine learning. Exploiting only basic properties of the Hilbert space, superposition principle of quantum mechanics and quantum measurements, we construct a quantum analog for Rosenblatt's perceptron, which is the simplest learning machine. We demonstrate that the quantum perceptron superiors its classical counterpart in learning capabilities. In particular, we show that the quantum perceptron is able to learn an arbitrary (Boolean) logical function, perform the classification on previously unseen classes and even recognize the superpositions of learned classes -- the task of high importance in applied medical engineering.
description: 6 pages, 1 figure, 19 references
Time-evolution and dynamical phase transitions at a critical time in a system of one dimensional bosons after a quantum quench
Creators: name: Mitra, Aditi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A renormalization group approach is used to show that a one dimensional system of bosons subject to a lattice quench exhibits a finite-time dynamical phase transition where an order parameter within a light-cone increases as a non-analytic function of time after a critical time. Such a transition is also found for a simultaneous lattice and interaction quench where the effective scaling dimension of the lattice becomes time-dependent, crucially affecting the time-evolution of the system. Explicit results are presented for the time-evolution of the boson interaction parameter and the order parameter for the dynamical transition as well as for more general quenches.
description: final published version
Generalized Formulation of Weighted Optimal Guidance Laws with Impact Angle Constraint
Creators: name: Lee, Chang-Hun
name: Tahk, Min-Jea
name: Lee, Jin-Ik
Publisher: name: arXiv
Year: 2012
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The purpose of this paper is to investigate the generalized formulation of weighted optimal guidance laws with impact angle constraint. From the generalized formulation, we explicitly find the feasible set of weighting functions that lead to analytical forms of weighted optimal guidance laws. This result has potential significance because it can provide additional degrees of freedom in designing a guidance law that accomplishes the specified guidance objective.
description: This work has been accepted for publication in IEEE Transactions on Aerospace and Electronic Systems (in press)
Detecting high-frequency gravitational waves with optically-levitated sensors
Creators: name: Arvanitaki, Asimina
name: Geraci, Andrew A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a tunable resonant sensor to detect gravitational waves in the frequency range of 50-300 kHz using optically trapped and cooled dielectric microspheres or micro-discs. The technique we describe can exceed the sensitivity of laser-based gravitational wave observatories in this frequency range, using an instrument of only a few percent of their size. Such a device extends the search volume for gravitational wave sources above 100 kHz by 1 to 3 orders of magnitude, and could detect monochromatic gravitational radiation from the annihilation of QCD axions in the cloud they form around stellar mass black holes within our galaxy due to the superradiance effect.
description: 5 pages, 2 figures, 2 tables, submitted to PRL -- v2: GR calculation corrected, size of the signal and experimental geometry unaffected, cavity response included in sensitivity plot and LIGO sensitivity curves updated
Nonadiabatic Time-Dependent Spin-Density Functional Theory for strongly correlated systems
Creators: name: Turkowski, Volodymyr
name: Rahman, Talat S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose a nonadiabatic time-dependent spin-density functional theory (TDSDFT) approach for studying the single-electron excited states and the ultrafast response of systems with strong electron correlations. The correlations are described by the correlation part of the nonadiabatic exchange-correlation (XC) kernel, which is constructed by using some exact results for the Hubbard model of strongly correlated electrons. We demonstrate that the corresponding nonadiabatic XC kernel reproduces main features of the spectrum of the Hubbard dimer and infinite-dimensional Hubbard model, some of which are impossible to obtain within the adiabatic approach. The theory may be applied for DFT study of strongly correlated electron systems in- and out-of-equilibrium, including the important case of nanostructures, for which it leads to a dramatic reduction of necessary computational power.
Ausgrabung des Klosters Brunshausen bei Gandersheim
Creators: name: Goetting, H.
name: Niquet, Franz
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 30 (1961): Nachrichten aus Niedersachsens Urgeschichte
Dynamical Jahn-Teller Effect in Spin-Orbital Coupled System
Creators: name: Nasu, Joji
name: Ishihara, Sumio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dynamical Jahn-Teller (DJT) effect in a spin-orbital coupled system on a honeycomb lattice is examined, motivated from recently observed spin-liquid behavior in Ba$_3$CuSb$_2$O$_9$. An effective vibronic Hamiltonian, where the superexchange interaction and the DJT effect are taken into account, is derived. We find that the DJT effect induces a spin-orbital resonant state where local spin-singlet states and parallel orbital configurations are entangled with each other. This spin-orbital resonant state is realized in between an orbital ordered state, where spin-singlet pairs are localized, and an antiferromagnetic ordered state. Based on the theoretical results, a possible scenario for Ba$_3$CuSb$_2$O$_9$ is proposed.
description: 13 pages, 8 figures, to be published in PRB
Inversions of Levy Measures and the Relation Between Long and Short Time Behavior of Levy Processes
Creators: name: Grabchak, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: The inversion of a Levy measure was first introduced (under a different name) in Sato 2007. We generalize the definition and give some properties. We then use inversions to derive a relationship between weak convergence of a Levy process to an infinite variance stable distribution when time approaches zero and weak convergence of a different Levy process as time approaches infinity. This allows us to get self contained conditions for a Levy process to converge to an infinite variance stable distribution as time approaches zero. We formulate our results both for general Levy processes and for the important class of tempered stable Levy processes. For this latter class, we give detailed results in terms of their Rosinski measures.
Nonperturbative contributions to a resummed leptonic angular distribution in inclusive $Z/γ^*$ boson production
Creators: name: Guzzi, Marco
name: Nadolsky, Pavel M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We summarize a new analysis of the distribution $ϕ_η^{*}$ of charged leptons produced in decays of $Z$ and $γ^{*}$ bosons in the Collins-Soper-Sterman (CSS) formalism for transverse momentum resummation. By comparing the $ϕ_η^{*}$ distribution measured at the Tevatron with the resummed CSS cross section with approximate ${\cal O}(α_{s}^{2})$ Wilson coefficients, we constrain the magnitude of the nonperturbative Gaussian smearing factor and analyze its uncertainty caused by variations in scale parameters. We find excellent agreement between the $ϕ_η^{*}$ data and our theoretical prediction, provided by the \textsc{ResBos} resummation program. The nonperturbative factor that we obtained can be used to update resummed QCD predictions for precision measurements in inclusive $W$ and $Z$ production and for comparisons to various models of nonperturbative dynamics.
description: 8 pages, 3 figures. Presented at conference: "The QCD Evolution Workshop", May 14-17 2012, Thomas Jefferson National Accelerator Facility, Newport News, VA
Block algebra in two-component BKP and D type Drinfeld-Sokolov hierarchies
Creators: name: Li, Chuanzhong
name: He, Jingsong
Publisher: name: arXiv
Year: 2012
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We construct generalized additional symmetries of a two-component BKP hierarchy defined by two pseudo-differential Lax operators. These additional symmetry flows form a Block type algebra with some modified(or additional) terms because of a B type reduction condition of this integrable hierarchy. Further we show that the D type Drinfeld-Sokolov hierarchy, which is a reduction of the two-component BKP hierarchy, possess a complete Block type additional symmetry algebra. That D type Drinfeld-Sokolov hierarchy has a similar algebraic structure as the bigraded Toda hierarchy which is a differential-discrete integrable system.
description: 16 pages, accepted for publication in the Journal of Mathematical Physics
In-plane radiative recombination channel of a dark exciton in self-assembled quantum dots
Creators: name: Smoleński, Tomasz
name: Kazimierczuk, Tomasz
name: Goryca, Mateusz
name: Jakubczyk, Tomasz
name: Kłopotowski, Łukasz
name: Cywiński, Łukasz
name: Wojnar, Piotr
name: Golnik, Andrzej
name: Kossacki, Piotr
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate evidence for a radiative recombination channel of dark excitons in self-assembled quantum dots. This channel is due to a light hole admixture in the excitonic ground state. Its presence was experimentally confirmed by a direct observation of the dark exciton photoluminescence from a cleaved edge of the sample. The polarization resolved measurements revealed that a photon created from the dark exciton recombination is emitted only in the direction perpendicular to the growth axis. Strong correlation between the dark exciton lifetime and the in-plane hole g-factor enabled us to show that the radiative recombination is a dominant decay channel of the dark excitons in CdTe/ZnTe quantum dots.
STAGES OF THE INNOVATIVE EDUCATIONAL PROCESS. THE SPECIFICS OF PEDAGOGICAL INNOVATIONS. HOW IT MANIFESTS ITSELF WHEN TEACHING PHYSICAL CULTURE
Creators: name: Xudaynazarova Gullola Mirkhojiddinovna Senior lecturer, Kokand State Pedagogical Institute
Publisher: name: Zenodo
Year: 2023

description: Pedagogical innovations in the broadest interpretation affect the entire education system and its individual components. Education is predominantly an artificial, projected and constructed object. The normative sphere of education, its technological level includes the following main components: the draft of the educational course (curriculum, program, general recommendations of the educational organization); the description of the educational course or pedagogical descriptions (normative descriptions of ideal and material means of education); an educational course as a set of pedagogical prescriptions. These three components are the objects of innovative transformations. 
Key words: knowledge, pedagogical technologies, physical culture, methods.
Possible spin-orbit driven spin-liquid ground state in the double perovskite phase of Ba3YIr2O9
Creators: name: Dey, Tusharkanti
name: Mahajan, A. V.
name: Kumar, R.
name: Koteswararao, B.
name: Chou, F. C.
name: Omrani, A. A.
name: Ronnow, H. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the structural transformation of hexagonal Ba3YIr2O9 to a cubic double perovskite form (stable in ambient conditions) under an applied pressure of 8GPa at 1273K. While the ambient pressure (AP) synthesized sample undergoes long-range magnetic ordering at 4K, the high pressure(HP) synthesized sample does not order down to 2K as evidenced from our susceptibility, heat capacity and nuclear magnetic resonance (NMR) measurements. Further, for the HP sample, our heat capacity data have the form gamma*T+beta*T3 in the temperature (T) range of 2-10K with the Sommerfeld coefficient gamma=10mJ/mol-Ir K2. The 89Y NMR shift has no T-dependence in the range of 4-120K and its spin-lattice relaxation rate varies linearly with T in the range of 8-45K (above which it is T-independent). Resistance measurements of both the samples confirm that they are semiconducting. Our data provide evidence for the formation of a 5d based, gapless, quantum spin-liquid (QSL) in the cubic (HP) phase of Ba3YIr2O9. In this picture, the T term in the heat capacity and the linear variation of 89Y 1/T1 arises from excitations out of a spinon Fermi surface. Our findings lend credence to the theoretical suggestion [G. Chen, R. Pereira, and L. Balents, Phys. Rev. B 82, 174440 (2010)] that strong spin-orbit coupling can enhance quantum fluctuations and lead to a QSL state in the double perovskite lattice.
description: 6 pages 5 figures