cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Entanglement is not a lower bound for geometric discord
Creators: name: Rana, Swapan
name: Parashar, Preeti
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that partial transposition of any $2\otimes n$ state can have at most $(n-1)$ number of negative eigenvalues. This extends a decade old result of $2\otimes 2$ case by Sanpera et al [Phys. Rev. A {\bf 58}, 826 (1998)]. We then apply this result to critically assess an important conjecture recently made in [Phys. Rev. A {\bf 84}, 052110 (2011)], namely, the (normalized) geometric discord should always be lower bounded by squared negativity. This conjecture has strengthened the common belief that measures of generic quantum correlations should be more than those of entanglement. Our analysis shows that unfortunately this is not the case and we give several counterexamples to this conjecture. All the examples considered here are in finite dimensions. Surprisingly, there are counterexamples in $2\otimes n$ for any $n>2$. Coincidentally, it appears that the $4\otimes 4$ Werner state, when seen as a $2\otimes 8$ dimensional state, also violates the conjecture. This result contributes significantly to the negative side of the current ongoing debates on the defining notion of geometric discord as a good measure of generic correlations.
description: v3: Title changed, matrix theoretic proof removed due to a gap; Supplementary Material will be added later; accepted in PRA as Rapid Communication
Formen der Aufklärung und ihrer Rezeption – Expression des Lumières et de leur réception (Festschrift zum 70. Geburtstag von Ulrich Ricken), hg. von R. Bach, R. Desné, G. Hassler, 1999
Creators: name: Schröder, P.
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 28 Nr. 2 (2001)
Wormholes supported by hybrid metric-Palatini gravity
Creators: name: Capozziello, Salvatore
name: Harko, Tiberiu
name: Koivisto, Tomi S.
name: Lobo, Francisco S. N.
name: Olmo, Gonzalo J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, a modified theory of gravity was presented, which consists of the superposition of the metric Einstein-Hilbert Lagrangian with an $f(\cal R)$ term constructed à la Palatini. The theory possesses extremely interesting features such as predicting the existence of a long-range scalar field, that explains the late-time cosmic acceleration and passes the local tests, even in the presence of a light scalar field. In this brief report, we consider the possibility that wormholes are supported by this hybrid metric-Palatini gravitational theory. We present here the general conditions for wormhole solutions according to the null energy conditions at the throat and find specific examples. In the first solution, we specify the redshift function, the scalar field and choose the potential that simplifies the modified Klein-Gordon equation. This solution is not asymptotically flat and needs to be matched to a vacuum solution. In the second example, by adequately specifying the metric functions and choosing the scalar field, we find an asymptotically flat spacetime.
description: 4 pages. V2: 5 pages, discussion added; matches published version
Mean-Square Continuity on Homogeneous Spaces of Compact Groups
Creators: name: Marinucci, Domenico
name: Peccati, Giovanni
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We show that any finite-variance, isotropic random field on a compact group is necessarily mean-square continuous, under standard measurability assumptions. The result extends to isotropic random fields defined on homogeneous spaces where the group acts continuously.
description: 8 pages
Archives nationales, Le personnel de l'administration préfectoral, 1800-1880. Répertoire nominatif par C. Lamoussière corrigé et complété par P. Laharie. Répertoire territorial et introduction par P. Laharie. Avant-propos par Ph. Bélaval, 1998 (W. H. Stein) ; Catalogue du fonds allemand, par S. Gebehenne et L. Noesser. Préface de W. Paravicini, 1999
Creators: name: Stein, W. H.
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 28 Nr. 3 (2001)
On selective influences, marginal selectivity, and Bell/CHSH inequalities
Creators: name: Dzhafarov, Ehtibar N.
name: Kujala, Janne V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: Neurons and Cognition (q-bio.NC)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences
subject: 60B99 (Primary) 81Q99, 91E45 (Secondary)

description: The Bell/CHSH inequalities of quantum physics are identical with the inequalities derived in mathematical psychology for the problem of selective influences in cases involving two bi- nary experimental factors and two binary random variables recorded in response to them. The following points are made regarding cognitive science applications: (1) compliance of data with these inequalities is informative only if the data satisfy the requirement known as marginal selectivity; (2) both violations of marginal selectivity and violations of the Bell/CHSH inequalities are interpretable as indicating that at least one of the two responses is influenced by both experimental factors.
description: This is an invited commentary for a special issue of Topics in Cognitive Science, dedicated to the use of quantum physical formalisms in cognitive science. Currently is in press
W. Maser (Hg.), Wilhelm Keitel: Mein Leben. Pflichterfüllung bis zum Untergang, 1998 (M. Spivak) ; G. Canonici, Les témoins de Jéhovah face à Hitler. Préface de F. Bédarida, 1998
Creators: name: Nowak †, K.
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 28 Nr. 3 (2001)
B. Bonwetsch, G. Bordjugov, N. M. Naimark (Hg.), Sowjetische Politik in der SBZ 1945–1949. Dokumente zur Tätigkeit der Propagandaverwaltung (Informationsverwaltung) der SMAD unter Sergej Tjul'panov, 1998
Creators: name: Defrance, C.
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 28 Nr. 3 (2001)
R. Pletl, Irdisches regnum in der mittelalterlichen Exegese. Ein Beitrag zur exegetischen Lexikographie und ihren Herrschaftsvorstellungen (7.–13. Jahrhundert), 2000
Creators: name: Veyrard-Cosme, C.
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 32 Nr. 1 (2005)
Supercharacters, exponential sums, and the uncertainty principle
Creators: name: Brumbaugh, J. L.
name: Bulkow, Madeleine
name: Fleming, Patrick S.
name: Garcia, Luis Alberto
name: Garcia, Stephan Ramon
name: Karaali, Gizem
name: Michal, Matt
name: Suh, Hong
name: Turner, Andrew P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Representation Theory (math.RT)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: The theory of supercharacters, which generalizes classical character theory, was recently introduced by P. Diaconis and I.M. Isaacs, building upon earlier work of C. Andre. We study supercharacter theories on $(Z/nZ)^d$ induced by the actions of certain matrix groups, demonstrating that a variety of exponential sums of interest in number theory (e.g., Gauss, Ramanujan, Heilbronn, and Kloosterman sums) arise in this manner. We develop a generalization of the discrete Fourier transform, in which supercharacters play the role of the Fourier exponential basis. We provide a corresponding uncertainty principle and compute the associated constants in several cases.
description: 20 pages, 6 figures. To appear in J. Number Theory
Searching for Dark Matter at the LHC with a Mono-Z
Creators: name: Bell, Nicole F.
name: Dent, James B.
name: Galea, Ahmad J.
name: Jacques, Thomas D.
name: Krauss, Lawrence M.
name: Weiler, Thomas J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate a mono-Z process as a potential dark matter search strategy at the LHC. In this channel a single Z boson recoils against missing transverse momentum, attributed to dark matter particles, $χ$, which escape the detector. This search strategy is related, and complementary to, monojet and monophoton searches. For illustrative purposes we consider the process $q\bar{q} -> χχZ$ in a toy dark matter model, where the Z boson is emitted from either the initial state quarks, or from the internal propagator. Among the signatures of this process will be a pair of muons with high pT that reconstruct to the invariant mass of the Z, and large amounts of missing transverse energy. Being a purely electroweak signal, QCD and other Standard Model backgrounds are relatively easily removed with modest selection cuts. We compare the signal to Standard Model backgrounds and demonstrate that, even for conservative cuts, there exist regions of parameter space where the signal may be clearly visible above background in future LHC data, allowing either new discovery potential or the possibility of supplementing information about the dark sector beyond that available from other observable channels.
description: 11 pages, 13 figures
Scale-dependent competing interactions: sign reversal of the average persistent current
Creators: name: Bary-Soroker, H.
name: Entin-Wohlman, O.
name: Imry, Y.
name: Aharony, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The interaction-induced orbital magnetic response of a nanoscale system, modeled by the persistent current in a ring geometry, is evaluated for a system which is a superconductor in the bulk. The interplay of the renormalized Coulomb and Fröhlich interactions is crucial. The diamagnetic response of the large superconductor may become paramagnetic when the finite-size-determined Thouless energy is larger than or on the order of the Debye energy.
description: 4 pages, 4 figures, references added minor modifications
Frühe Kirchen im östlichen Alpengebiet. Von der Spätantike bis in ottonische Zeit, 2 vol., publ. par H. R. Sennhauser, 2003
Creators: name: Bührer-Thierry, Geneviève
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 33 Nr. 1 (2006)
Recursive quantum detector tomography
Creators: name: Zhang, L.
name: Datta, A.
name: Coldenstrodt-Ronge, H. B.
name: Jin, X. -M.
name: Eisert, J.
name: Plenio, M. B.
name: Walmsley, I. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Conventional tomographic techniques are becoming increasingly infeasible for reconstructing the operators of quantum devices of growing sophistication. We describe a novel tomographic procedure using coherent states which begins by reconstructing the diagonals of the operator, and then each successive off-diagonal in a recursive manner. Each recursion is considerably more efficient than reconstructing the operator in its entirety, and each successive recursion involves fewer parameters. We apply our technique to reconstruct the positive-operator-valued measure (POVM) corresponding to a recently developed coherent optical detector with phase sensitivity and number resolution. We discuss the effect of various parameters on the reconstruction accuracy. The results show the efficiency of the method and its robustness to experimental noise.
description: 23 pages, 5 figures. Minor changes
Racism-related stress and mental health among black women living in Los Angeles County, California: A comparison of postpartum mood and anxiety disorder screening scales
Creators: name: Gray, Sydney
name: Hindra, Sasha S.
name: Tobin, Courtney S. Thomas
name: Saint Arnault, Denise
name: Chen, Keren
name: Choi, Kristen
name: Robinson, Milllicent N.
name: Floyd James, Kortney
Publisher: name: Springer Nature
Year: 2024

description:
Purpose To assess Black women’s exposure to and appraisal of racism-related stress during the postpartum period and to distinguish its impact on three indicators of postpartum mood and anxiety disorders (PMADs) symptoms. Methods Data from the Black Mothers’ Mental Wellness Study (N = 231) and linear regression models estimated the associations between racism-related stress and the PMAD indicators: 3-item Edinburgh Postnatal Depression Scale (EPDS-3), 8-item Patient Health Questionnaire (PHQ-8), and PHQ-15. Results The majority of participants (80.5%, N = 186) experienced racism a few times a year or more, of which 37.1% (N = 69) were bothered somewhat and 19.3% (N = 36) a lot. Racism-related stress, income, level of education, and history of mental health diagnosis explained greater variance in PMAD symptoms as measured by the PHQ-8 score (R2 = 0.58, p =  < 0.001) compared to the EPDS-3 (R2 = 0.46, p =  < 0.001) or the PHQ-15 (R2 = 0.14, p = 0.035). Conclusions Racism is a stressor for Black women living in Los Angeles County, California. Racism-related stress and emotional expression of PMAD symptoms were salient to the postpartum mental health of the Black women in this study. Findings from this study suggest that the PHQ-8 should be used to assess how racism impacts Black women’s postpartum mental health.
Zwischen Deutschland und Frankreich. Elisabeth von Lothringen, Gräfin von Nassau-Saarbrücken, hg. von W. Haubrichs, H.-W. Herrmann, unter Mitarbeit von G. Sauder, 2002
Creators: name: Pérennec, René
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 33 Nr. 1 (2006)
Römerzeitliche Pflanzenfunde aus der Kelteranlage in Piesport-Müstert
Creators: name: König, Margarethe
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: [nicht vorhanden]
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 24 (1992): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
Three-state herding model of the financial markets
Creators: name: Kononovicius, Aleksejus
name: Gontis, Vygintas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We propose a Markov jump process with the three-state herding interaction. We see our approach as an agent-based model for the financial markets. Under certain assumptions this agent-based model can be related to the stochastic description exhibiting sophisticated statistical features. Along with power-law probability density function of the absolute returns we are able to reproduce the fractured power spectral density, which is observed in the high-frequency financial market data. Given example of consistent agent-based and stochastic modeling will provide background for the further developments in the research of complex social systems.
description: 11 pages, 3 figures
Felix Hettner und die Erforschung des obergermanisch-rätischen Limes
Creators: name: Merten, Jürgen
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: [nicht vorhanden]
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 24 (1992): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
Computation of Galois groups of rational polynomials
Creators: name: Fieker, Claus
name: Klüners, Jürgen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Computational Galois theory, in particular the problem of computing the Galois group of a given polynomial is a very old problem. Currently, the best algorithmic solution is Stauduhar's method. Computationally, one of the key challenges in the application of Stauduhar's method is to find, for a given pair of groups H
description: Improved version and new title
Eine römische Inschrift am Frankenturm in Trier
Creators: name: Binsfeld, Wolfgang
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: [nicht vorhanden]
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 25 (1993): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
"Ich war außer mir vor Wonne!" : Die Aufdeckung der römischen Mosaiken bei Fliessem in der ersten Hälfte des 19. Jahrhunderts
Creators: name: Merten, Jürgen
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: [nicht vorhanden]
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 31 (1999): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
Mosella oder Sacramento? : Die Sonderausstellung "abgetaucht, aufgetaucht" im Rheinischen Landesmuseum Trier zeigt Flußfunde zwischen Forschung und Schatzsuche
Creators: name: Unruh, Frank
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: [nicht vorhanden]
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 33 (2001): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
M5/D4 brane partition function on a circle bundle
Creators: name: Bak, Dongsu
name: Gustavsson, Andreas
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider Abelian M5 brane on a six-manifold which we take as a circle bundle over a five-manifold $M$. We compute the zero mode part of the M5 brane partition function using Chern-Simons theory and Hamiltonian formulation respectively and find an agreement. We also show that the D4 brane on $M$ shares exactly the same zero mode partition function again using the Hamiltonian formulation. For the oscillator modes we find that KK modes associated with the circle compactification are missing from the D4 brane. By making an infinitesimal noncommutative deformation we have instanton threshold bound states. We explicitly compute the instanton partition function up to instanton charge three, and show a perfect match with a corresponding contribution inside the M5 brane partition function, thus providing a very strong supporting evidence that D4 brane is identical with M5 brane which extends beyond the BPS sector. We comment on the modular properties of the M5 brane partition function when compactified on $T^2$ times a four-manifold. We briefly discuss a case of a singular fibration.
description: 55 pages
Inhaltsverzeichnis
Creators: name: Redaktion, Die
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: -
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 33 (2001): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
Der Petrisberg in Trier : Arbeitsschwerpunkt des Rheinischen Landesmuseums Trier 2002-2005
Creators: name: Kuhnen, Hans-Peter
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: [nicht vorhanden]
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 34 (2002): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
Titel
Creators: name: Redaktion, Die
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: -
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 34 (2002): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
Two-dimensional dynamics of expansion of a degenerate Bose gas
Creators: name: Mazets, Igor E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Expansion of a degenerate Bose gas released from a pancakelike trap is numerically simulated under the assumption of separation of the motion in the plane of the loose initial trapping and the motion in the direction of the initial tight trapping. The initial conditions for the phase fluctuations are generated using the extension to the two-dimensional case of the description of the phase noise by the Ornstein-Uhlenbeck stochastic process. The numerical simulations, taking into account both the finite size of the two-dimensional system and the atomic interactions, which cannot be neglected on the early stage of expansion, did not reproduce the scaling law for the peaks in the density fluctuation spectra experimentally observed by Choi, Seo, Kwon, and Shin [Phys. Rev. Lett. 109, 125301 (2012)]. The latter experimental results may thus require an explanation beyond our current assumptions.
description: 4 pages, 2 figures, revtex4
Thermal instabilities in cooling galactic coronae: fuelling star formation in galactic discs
Creators: name: Hobbs, Alexander
name: Read, Justin
name: Power, Chris
name: Cole, David
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the means by which cold gas can accrete onto Milky Way mass galaxies from a hot corona of gas, using a new smoothed particle hydrodynamics code, 'SPHS'. We find that the 'cold clumps' seen in many classic SPH simulations in the literature are not present in our SPHS simulations. Instead, cold gas condenses from the halo along filaments that form at the intersection of supernovae-driven bubbles from previous phases of star formation. This positive feedback feeds cold gas to the galactic disc directly, fuelling further star formation. The resulting galaxies in the SPH and SPHS simulations differ greatly in their morphology, gas phase diagrams, and stellar content. We show that the classic SPH cold clumps owe to a numerical thermal instability caused by an inability for cold gas to mix in the hot halo. The improved treatment of mixing in SPHS suppresses this instability leading to a dramatically different physical outcome. In our highest resolution SPHS simulation, we find that the cold filaments break up into bound clumps that form stars. The filaments are overdense by a factor of 10-100 compared to the surrounding gas, suggesting that the fragmentation results from a physical non-linear instability driven by the overdensity. This 'fragmenting filament' mode of disc growth has important implications for galaxy formation, in particular the role of star formation in bringing cold gas into disc galaxies.
description: 20 pages, 12 figures. Submitted to MNRAS. A better formatted version of the PDF is available at http://www.astro.phys.ethz.ch/~ahobbs/papers/coolinghalospaper.pdf . Movies (highly recommended viewing) available at http://www.phys.ethz.ch/~ahobbs/movies.html
МЕТОДЫ ОБУЧЕНИЯ ДЕТЕЙ ДОШКОЛЬНИКОВ ПОНИМАНИЮ СЕБЯ
Creators: name: Назирова, Гузал
name: Муллажонова, Наргиза
Publisher: name: Zenodo
Year: 2023

description: Публикация посвящена анализу Методы обучения детей дошкольников пониманию себя, а также описываются внедрение инновационные технологии, с помощью которых можно добиться больших результатов в воспитании и развитии способностей детей.
Essential Killing fields of parabolic geometries
Creators: name: Čap, Andreas
name: Melnick, Karin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We study vector fields generating a local flow by automorphisms of a parabolic geometry with higher order fixed points. We develop general tools extending the techniques of [1], [2], and [3]. We apply these tools to almost Grassmannian, almost quaternionic, and contact parabolic geometries, including CR structures, to obtain descriptions of the possible dynamics of such flows near the fixed point and strong restrictions on the curvature. In some cases, we can show vanishing of the curvature on a nonempty open set. Deriving consequences for a specific geometry entails evaluating purely algebraic and representation-theoretic criteria in the model homogeneous space. Published in Indiana University Mathematics Journal.
description: 50 pages. Minor corrections, references updated
Photo-excitation Cascade and Multiple Carrier Generation in Graphene
Creators: name: Tielrooij, K. J.
name: Song, J. C. W.
name: Jensen, S. A.
name: Centeno, A.
name: Pesquera, A.
name: Elorza, A. Zurutuza
name: Bonn, M.
name: Levitov, L. S.
name: Koppens, F. H. L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The conversion of light into free electron-hole pairs constitutes the key process in the fields of photodetection and photovoltaics. The efficiency of this process depends on the competition of different relaxation pathways and can be greatly enhanced when photoexcited carriers do not lose energy as heat, but instead transfer their excess energy into the production of additional electron-hole pairs via carrier-carrier scattering processes. Here we use Optical pump - Terahertz probe measurements to show that in graphene carrier-carrier scattering is unprecedentedly efficient and dominates the ultrafast energy relaxation of photoexcited carriers, prevailing over optical phonon emission in a wide range of photon wavelengths. Our results indicate that this leads to the production of secondary hot electrons, originating from the conduction band. Since hot electrons in graphene can drive currents, multiple hot carrier generation makes graphene a promising material for highly efficient broadband extraction of light energy into electronic degrees of freedom, enabling high-efficiency optoelectronic applications.
Radial and nonradial solutions of a strongly indefinite elliptic system on $\mathbb{R}^N$
Creators: name: Batkam, Cyril Joël
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J60, 35B06

description: This paper is concerned with the following system of elliptic equations {equation*} \{{array}{ll} -Δu+u= F_u(|x|,u,v), & \hbox{} -Δv+v=- F_v(|x|,u,v), & \hbox{} \,\,\,\,\,u,v\in H^1(\mathbb{R}^N). & \hbox{} {array}. {equation*} It is shown that if $F$ is odd in $(u,v)$ and satisfy some growth conditions, then $(\mathcal{S})$ has infinitely many both radial and nonradial solutions. The proof relies on the Principle of Symmetric Criticality and a generalized Fountain Theorem for strongly indefinite functionals.
description: 10 pages
Evaluation of the Pion-Nucleon Sigma Term from CHAOS Data
Creators: name: Stahov, J.
name: Clement, H.
name: Wagner, G. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We have reanalyzed the $π^{\pm} p$ scattering data at low energy in the Coulomb-nuclear interference region as measured by the CHAOS group at TRIUMF with the aim to determine the pion-nucleon $σ$ term. The resulting value $σ=(44\pm 12)$ MeV, while in agreement with lattice QCD calculations and compatible with other recent analyses, is significantly lower than that from the GWU-TRIUMF analysis of 2002.
Die Holzplastik aus der Wurt Hessens im Kulturbild des 7. nachchristlichen Jahrhunderts
Creators: name: Schmid, Peter
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 24 (1955): Nachrichten aus Niedersachsens Urgeschichte
Bailloud, G. et Mieg de Boofzheim, P. Les civilisations néolithiques de la France dans leur contexte européen
Creators: name: Jacob-Friesen, Karl Hermann
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Bailloud, G. et Mieg de Boofzheim, P. Les civilisations néolithiques de la France dans leur contexte européen. Paris (A. et J. Picard et Cie) 1955, XV und 244 S. mit XCVI Taf.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 24 (1955): Nachrichten aus Niedersachsens Urgeschichte
Slovenská Archeologia Bd. I
Creators: name: Jacob-Friesen, Karl Hermann
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Slovenská Archeologia Bd. I. Herausgeg. v. d. Slovak. Akad. d. Wiss. Bratislava 1953. 213 Seiten, zahlr. Abb. u. Taf. mit russ. und engl. bzw. franz. Übersetzung der größeren Aufsätze
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 24 (1955): Nachrichten aus Niedersachsens Urgeschichte
Rekreationen – urlaub / ostsee. mit rosanne. Installation und Photographien von Hilde Winkler
Creators: name: Lund, Cornelia
Publisher: name: querelles-net
Year: 2004
Subjects: Bildende Kunst; Körper; Geschlecht; Gender

description: querelles-net, Nr. 12 (2004): Körper(Konzepte)
Origin of the Superior Conductivity of Perovskite Ba(Sr)SnO3
Creators: name: Liu, Heng-Rui
name: Yang, Ji-Hui
name: Xiang, H. J.
name: Gong, X. G.
name: Wei, Su-Huai
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: ASnO3 (A=Ba, Sr) are unique perovskite oxides in that they have superior electron conductivity despite their wide optical band gaps. Using first-principles band structure calculations, we show that the small electron effective masses, thus, good electron conductivity of ASnO3 can be attributed to the large size of Sn in this system that gives the conduction band edge with antibonding Sn and O s characters. Moreover, we show that ASnO3 can be easily doped by La with shallow LaA(+/0) donor level. Our results, therefore, explained why the perovskite BaSnO3, SrSnO3, and their alloys are promising candidates for transparent conducting oxides.
description: 12 pages, 4 figures, 2 tables
CALIFA, the Calar Alto Legacy Integral Field Area survey. II. First public data release
Creators: name: CALIFA Collaboration
name: Husemann, B.
name: Jahnke, K.
name: Sánchez, S. F.
name: Barrado, D.
name: Bekeraitė, S.
name: Bomans, D. J.
name: Castillo-Morales, A.
name: Catalán-Torrecilla, C.
name: Fernandes, R. Cid
name: Falcón-Barroso, J.
name: García-Benito, R.
name: Delgado, R. M. González
name: Iglesias-Páramo, J.
name: Johnson, B. D.
name: Kupko, D.
name: López-Fernandez, R.
name: Lyubenova, M.
name: Marino, R. A.
name: Mast, D.
name: Miskolczi, A.
name: Monreal-Ibero, A.
name: de Paz, A. Gil
name: Pérez, E.
name: Pérez, I.
name: Rosales-Ortega, F. F.
name: Ruiz-Lara, T.
name: Schilling, U.
name: van de Ven, G.
name: Walcher, J.
name: Alves, J.
name: de Amorim, A. L.
name: Backsmann, N.
name: Barrera-Ballesteros, J. K.
name: Bland-Hawthorn, J.
name: Cortijo, C.
name: Dettmar, R. -J.
name: Demleitner, M.
name: Díaz, A. I.
name: Enke, H.
name: Florido, E.
name: Flores, H.
name: Galbany, L.
name: Gallazzi, A.
name: García-Lorenzo, B.
name: Gomes, J. M.
name: Gruel, N.
name: Haines, T.
name: Holmes, L.
name: Jungwiert, B.
name: Kalinova, V.
name: Kehrig, C.
name: Kennicutt, R. C.
name: Klar, J.
name: Lehnert, M. D.
name: Lóez-Sáchez, Á. R.
name: de Lorenzo-Cáceres, A.
name: Mármol-Queraltó, E.
name: Márquez, I.
name: Mendez-Abreu, J.
name: Mollá, M.
name: del Olmo, A.
name: Meidt, S. E.
name: Papaderos, P.
name: Puschnig, J.
name: Quirrenbach, A.
name: Roth, M. M.
name: Sánchez-Blázquez, P.
name: Spekkens, K.
name: Singh, R.
name: Stanishev, V.
name: Trager, S. C.
name: Vilchez, J. M.
name: Wild, V.
name: Wisotzki, L.
name: Zibetti, S.
name: Ziegler, B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the first public data release of the CALIFA survey. It consists of science-grade optical datacubes for the first 100 of eventually 600 nearby (0.005
description: 27 pages, 25 figures, 6 tables, final version including corrections after proof reading, the CALIFA DR1 homepage at http://califa.caha.es/DR1 is open for the public
Effects of gluon number fluctuations on photon - photon collisions at high energies
Creators: name: Goncalves, V. P.
name: Amaral, J. T. de Santana
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 investigate the effects of gluon number fluctuations on the total $γγ$, $γ^*γ^*$ cross sections and the photon structure function $F_2^γ(x,Q^2)$. Considering a model which relates the dipole-dipole and dipole-hadron scattering amplitudes, we estimate these observables by using event-by-event and physical amplitudes. We demonstrate that both analyses are able to describe the LEP data, but predict different behaviours for the observables at high energies, with the gluon fluctuations effects decreasing the cross sections. We conclude that the study of $γγ$ interactions can be useful to constrain the QCD dynamics.
description: 9 pages, 6 figures. Improved version with two new figures. Version to be published in Physical Review D
An examination of multiple illness and social related stressors during the COVID-19 pandemic on maternal and child mental health; findings from a birth cohort in rural Pakistan
Creators: name: Haight, Sarah C.
name: Baranov, Victoria
name: Bibi, Amina
name: Escobar Carias, Michelle S.
name: Sikander, Siham
name: Maselko, Joanna
name: Bhalotra, Sonia
name: Frost, Allison
name: Collins, Amanda
Publisher: name: Springer Nature
Year: 2025

description:
Purpose In an effort to improve preparation for future pandemics, researchers continue to examine the myriad psychosocial pathways through which the COVID-19 pandemic impacted mental health. Moving beyond extant research on factors such as financial difficulties or social isolation, we present findings on two less documented pathways: (a) COVID illness and death within one’s social network and (b) experiencing pandemic-related basic needs stressors, beyond financial difficulties, on the mental health of mothers and children in South Asia. Methods Data come from the 2021–2022 wave of the Bachpan birth cohort (6-year-old children, n = 814 mother-child dyads) in rural Pakistan. Multivariable regressions were used to estimate the association between COVID illness/death among family/friend/community members and basic needs stressors (e.g. difficulties with food, housing, medical care) with 4 outcomes: maternal anxiety (GAD-7) and depression symptoms (PHQ-9), and child emotional/behavioral problems (SDQ-TD) and anxiety (SCAS). Results Maternal mental health was independently predicted by illness within the mother’s network and basic needs stressors, even after accounting for pre-pandemic socioeconomic status, depression, and pandemic-related financial stressors. Specifically, having a family member/friend who became ill was associated with 1.29 higher PHQ-9 scores (95% CI: 0.34, 2.24), compared to those who did not know anyone affected. Increased basic needs stressors were also associated with higher PHQ-9 and GAD-7 levels and children’s behavioral/emotional problems and anxiety. Social network proximity to COVID illness/death was not associated with child mental health outcomes. Conclusion These findings provide evidence of additional pathways through which prolonged global events, like the pandemic, can have multigenerational mental health impacts.
A Parabolic Model for the Dimple Potentials
Creators: name: Aydın, Melike Çıbık
name: Uncu, Haydar
name: Deniz, Coşkun
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study truncated parabolic function and demonstrate that it is a representation of the Dirac delta function. We also show that the truncated parabolic function, used as a potential in the Schrödinger equation, has the same bound state spectrum, tunneling and reflection amplitudes with the Dirac delta potential as the width of the parabola approximates to zero. Dirac delta potential is used to model dimple potentials which are utilized to increase the phase-space density of a Bose-Einstein condensate in a harmonic trap. We show that harmonic trap with a delta function at the origin is a limit case of the harmonic trap with a symmetric truncated parabolic potential around the origin. Therefore, we propose that the truncated parabolic potential is a better candidate for modeling the dimple potentials.
description: 22 pages, 5 Figures, 2 Tables
Metal nanofilm in strong ultrafast optical fields
Creators: name: Apalkov, Vadym
name: Stockman, Mark I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We predict that a metal nanofilm subjected to an ultrashort (single oscillation) optical pulse of a high field amplitude $\sim 3 \mathrm{V/Å}$ at normal incidence undergoes an ultrafast (at subcycle times $\lesssim 1 \mathrm{fs}$) transition to a state resembling semimetal. Its reflectivity is greatly reduced, while the transmissivity and the optical field inside the metal are greatly increased. The temporal profiles of the optical fields are predicted to exhibit pronounced subcycle oscillations, which are attributed to the Bloch oscillations and formation of the Wannier-Stark ladder of electronic states. The reflected, transmitted, and inside-the-metal pulses have non-zero areas approaching half-cycle pulses. The effects predicted are promising for applications to nanoplasmonic modulators and field-effect transistors with petahertz bandwidth.
Cusped light-like Wilson loops in gauge theories
Creators: name: Cherednikov, I. O.
name: Mertens, T.
name: Van der Veken, F. F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose and discuss a new approach to the analysis of the correlation functions which contain light-like Wilson lines or loops, the latter being cusped in addition. The objects of interest are therefore the light-like Wilson null-polygons, the soft factors of the parton distribution and fragmentation functions, high-energy scattering amplitudes in the eikonal approximation, gravitational Wilson lines, etc. Our method is based on a generalization of the universal quantum dynamical principle by J. Schwinger and allows one to take care of extra singularities emerging due to light-like or semi-light-like cusps. We show that such Wilson loops obey a differential equation which connects the area variations and renormalization group behavior of those objects and discuss the possible relation between geometrical structure of the loop space and area evolution of the light-like cusped Wilson loops.
description: Invited mini-review article to Physics of Particles and Nuclei. 16 pages, 9 eps figures; v2: references style changed, citations corrected and updated
What happens to Petrov classification on horizons of axisymmetric dirty black holes
Creators: name: Tanatarov, I. V.
name: Zaslavskii, O. B.
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

description: We consider axisymmetric stationary dirty black holes with regular non-extremal or extremal horizons, and compute their on-horizon Petrov types. The Petrov type (PT) in the frame of the observer crossing the horizon can be different from that formally obtained in the usual (but singular in the horizon limit) frame of an observer on a circular orbit. We call this entity the boosted Petrov type (BPT), as the corresponding frame is obtained by a singular boost from the regular one. The PT off-horizon can be more general than PT on-horizon and that can be more general than the BPT on horizon. This is valid for all regular metrics, irrespective of the extremality of the horizon. We analyze and classify the possible relations between the three characteristics and discuss the nature and features of the underlying singular boost. The three Petrov types can be the same only for space-times of PT D and O off-horizon. The mutual alignment of principal null directions and the generator in the vicinity of the horizon is studied in detail. As an example, we also analyze a special class of metrics with utra-extremal horizons (for which the regularity conditions look different from the general case) and compare their off-horizon and on-horizon algebraic structure in both frames.
description: 41 pages. Expanded motivation for considering both FO and OO frames, clarified exposition and improved terminilogy, added section on different singular boosts
A Simulated Annealing Approach to Approximate Bayes Computations
Creators: name: Albert, Carlo
name: Kuensch, Hans R.
name: Scheidegger, Andreas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computation (stat.CO)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Approximate Bayes Computations (ABC) are used for parameter inference when the likelihood function of the model is expensive to evaluate but relatively cheap to sample from. In particle ABC, an ensemble of particles in the product space of model outputs and parameters is propagated in such a way that its output marginal approaches a delta function at the data and its parameter marginal approaches the posterior distribution. Inspired by Simulated Annealing, we present a new class of particle algorithms for ABC, based on a sequence of Metropolis kernels, associated with a decreasing sequence of tolerances w.r.t. the data. Unlike other algorithms, our class of algorithms is not based on importance sampling. Hence, it does not suffer from a loss of effective sample size due to re-sampling. We prove convergence under a condition on the speed at which the tolerance is decreased. Furthermore, we present a scheme that adapts the tolerance and the jump distribution in parameter space according to some mean-fields of the ensemble, which preserves the statistical independence of the particles, in the limit of infinite sample size. This adaptive scheme aims at converging as close as possible to the correct result with as few system updates as possible via minimizing the entropy production in the system. The performance of this new class of algorithms is compared against two other recent algorithms on two toy examples.
description: 20 pages, 2 figures
Phenomenology of WIMPy baryogenesis models
Creators: name: Bernal, Nicolas
name: Josse-Michaux, Francois-Xavier
name: Ubaldi, Lorenzo
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A possible connection between the abundances of baryonic and dark matter (DM) has been explored so far mostly in the context of the so-called asymmetric DM. Recently, a very different mechanism, dubbed "WIMPy baryogenesis", has been proposed to relate the baryon asymmetry to DM annihilation. The DM candidate is a weakly interacting massive particle (WIMP), and the usual WIMP scenario is slightly extended to accommodate baryogenesis, which is accomplished around the time of DM freeze-out. We construct an effective field theory that encompasses a quite general class of models which implement the WIMPy baryogenesis. Under some reasonable, simplifying assumptions, we show that a good portion of the parameter space is allowed for these models, after experimental constraints are taken into account. Bounds from the LHC require that the WIMP be heavier than 400 GeV.
description: 30 pages, 13 figures. Final version: added some remarks on neutron-antineutron oscillation and some references; version to appear in JCAP
Near horizon black holes in diverse dimensions and integrable models
Creators: name: Galajinsky, Anton
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The near horizon geometry of extremal rotating black hole in arbitrary dimension possesses SO(2,1)xU(n) symmetry in the special case that all n rotation parameters are equal. We consider a conformal particle associated with such a maximally symmetric configuration and derive from it a new integrable Hamiltonian mechanics with U(n) symmetry. A further reduction of the model is discussed, which is obtained by discarding cyclic variables. A variant of the Higgs oscillator and the Poschl-Teller system show up in four and five dimensions, respectively.
description: V2: 17 pages, minor modifications
Überblick und Bestandsaufnahme. Lexika, Glossare und Handbücher zur Frauen- und Geschlechterforschung
Creators: name: Bock, Ulla
Publisher: name: querelles-net
Year: 2005
Subjects: Medien; Hochschule; Geschlecht; Gender

description: querelles-net, Nr. 15 (2005): Offenes Heft
Completely positive definite functions and Bochner's theorem for locally compact quantum groups
Creators: name: Daws, Matthew
name: Salmi, Pekka
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 20G42, 43A35

description: We prove two versions of Bochner's theorem for locally compact quantum groups. First, every completely positive definite "function" on a locally compact quantum group $\G$ arises as a transform of a positive functional on the universal C*-algebra $C_0^u(\dual\G)$ of the dual quantum group. Second, when $\G$ is coamenable, complete positive definiteness may be replaced with the weaker notion of positive definiteness, which models the classical notion. A counterexample is given to show that the latter result is not true in general. To prove these results, we show two auxiliary results of independent interest: products are linearly dense in $\lone_\sharp(\G)$, and when $\G$ is coamenable, the Banach *-algebra $\lone_\sharp(\G)$ has a contractive bounded approximate identity.
description: 20 pages
Waveguide-QED-Based Photonic Quantum Computation
Creators: name: Zheng, Huaixiu
name: Gauthier, Daniel J.
name: Baranger, Harold U.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose a new scheme for quantum computation using flying qubits--propagating photons in a one-dimensional waveguide--interacting with matter qubits. Photon-photon interactions are mediated by the coupling to a three- or four-level system, based on which photon-photon π-phase gates (Controlled-NOT) can be implemented for universal quantum computation. We show that high gate fidelity is possible given recent dramatic experimental progress in superconducting circuits and photonic-crystal waveguides. The proposed system can be an important building block for future on-chip quantum networks.
description: Published version, extensively revised main text and supplemental material compared to v1
Gapless edge states and their stability in two-dimensional quantum magnets
Creators: name: Suzuki, Takafumi
name: Sato, Masahiro
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the nature of edge states in extrinsically and spontaneously dimerized states of two-dimensional spin-1/2 antiferromagnets, by performing quantum Monte Carlo simulation. We show that a gapless edge mode emerges in the wide region of the dimerized phases, and the critical exponent of spin correlators along the edge deviates from the value of Tomonaga-Luttinger (TL) liquid universality in large but finite systems at low temperatures. We also demonstrate that the gapless nature at edges is stable against several perturbations such as external magnetic field, easy-plane XXZ anisotropy, Dzyaloshinskii-Moriya interaction, and further-neighbor exchange interactions. The edge states exhibit non TL-liquid behavior, depending strongly on model parameters and kinds of perturbations. Possible ways of detecting these edge states are discussed. Properties of edge states we show in this paper could also be used as reference points to study other edge states of more exotic gapped magnetic phases such as spin liquids.
description: 8 pages, 7 figures