cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bethe-Salpeter Amplitudes and Density Correlations for Mesons with Wilson Fermions
Creators: name: Gupta, Rajan
name: Daniel, David
name: Grandy, Jeffrey
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present an investigation of various gauge invariant definitions of the $q\bar q$ Bethe-Salpeter (BS) amplitude for mesons in lattice QCD, and compare them to the Coulomb and Landau gauge BS amplitudes. We show that the gauge invariant BS amplitude is considerably broadened by the use of ``fat'' gauge links (constructed by smearing the links of the original lattice). A qualitative demonstration of the Lorentz contraction of the pion wavefunction at non-zero momentum is given. We also calculate density-density correlations and discuss the limitations in extracting the charge radius of the pion from these observables. Lastly, the polarization dependence of the BS amplitude for the $ρ$ meson is exhibited, and we extract the relative admixture of $l=0$ and $l=2$ states showing that simple hydrogen-like wavefunctions provide a good fit.
description: This PS file includes 1 table and 15 figures 1-12 (31 pages total) Los Alamos Preprint LA UR-93-1051
Infrared Surface Brightness Analysis of Galaxies in Compact Groups
Creators: name: Plauchu-Frayn, I.
name: Coziol, R.
name: Bravo-Alfaro, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Images of 7 Compact groups of galaxies (CG) were obtained using the 2.1m telescope in San Pedro Martir (B.C. Mexico) equipped with the NIR camera CAMILA. The NIR images trace the mass of the galaxies, through the oldest and more evolved stellar populations. The goal of this project is to search for evidence of morphological perturbations correlated with the level of activity (AGN or star formation) of the galaxies. We find that the level of perturbation is well correlated with activity observed in optical spectrocopy (Coziol et al. 2004). Evidence for perturbations decreases from more active groups to less active groups, confirming the classification. Our analysis suggests that galaxies in more active groups are undergoing important transformations due to interaction and merging and that the whole groups is on a merger path. Galaxies in less active CG have gone through similar processes in the recent past and are either in a final merging phase or in equilibrium due to a more massive halo of dark matter.
description: 2 pages, 1 figure, Proc. ESO Workshop "Groups of galaxies in the nearby Universe", Santiago, Chile, 5-9 Dec. 2005, ESO Astrophysics Symposia, eds. I. Saviane, V. Ivanov & J. Borissova, Springer-Verlag
Universally Fisher-Symmetric Informationally Complete Measurements
Creators: name: Zhu, Huangjun
name: Hayashi, Masahito
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A quantum measurement is Fisher symmetric if it provides uniform and maximal information on all parameters that characterize the quantum state of interest. Using (complex projective) 2-designs, we construct measurements on a pair of identically prepared quantum states that are Fisher symmetric for all pure states. Such measurements are optimal in achieving the minimal statistical error without adaptive measurements. We then determine all collective measurements on a pair that are Fisher symmetric for the completely mixed state and for all pure states simultaneously. For a qubit, these measurements are Fisher symmetric for all states. The minimal optimal measurements are tied to the elusive symmetric informationally complete measurements, which reflects a deep connection between local symmetry and global symmetry. In the study, we derive a fundamental constraint on the Fisher information matrix of any collective measurement on a pair, which offers a useful tool for characterizing the tomographic efficiency of collective measurements.
description: 6+15 pages, 1+1 figures; published in Phys. Rev. Lett
Umschlag mit Dokumenten über eine Geldspende der Jüdischen Gemeinde Berlin an Zunz
Creators: name: (:Unkn) Unknown
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1800
Subjects: subject: 090

description: Umschlag, der erst nach dem Tod von Salomon Neumann geöffnet und durch Felix Liebermann mit einem neuen Umschlag (ARC 4˚ 792/C3-1.1) versehen wurde
title: PP_1960-1961_Esquisse d'entraînement_Une halte
Creators: name: Panerai, Philippe
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2024
Subjects: subject: architecture
subject: beaux-arts
subject: Écoles des beaux-arts
subject: enseignement
subject: Atelier Arretche

description: Travaux scolaires de Philippe Panerai à l'École des beaux-arts.
D-Branes, Moduli and Supersymmetry
Creators: name: Balasubramanian, Vijay
name: Leigh, Robert G.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study toroidal compactifications of Type II string theory with D-branes and nontrivial antisymmetric tensor moduli and show that turning on these fields modifies the supersymmetry projections imposed by D-branes. These modifications are seen to be necessary for the consistency of T-duality. We also show the existence of unusual BPS configurations of branes at angles that are supersymmetric because of conspiracies between moduli fields. Analysis of the problem from the point of view of the effective field theory of massless modes shows that the presence of a 2-form background must modify the realization of supersymmetry on the brane. In particular, the appropriate supersymmetry variation of the physical gaugino vanishes in any constant field strength background. These considerations are relevant for the $E_7$-symmetric counting of states of 4-dimensional black holes in Type II string theory compactified on $T^6$.
description: LaTeX, minor corrections, version to be published in PRD
Ladder operators for Klein-Gordon equation with scalar curvature term
Creators: name: Mück, Wolfgang
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, Cardoso, Houri and Kimura constructed generalized ladder operators for massive Klein-Gordon scalar fields in space-times with conformal symmetry. Their construction requires a closed conformal Killing vector, which is also an eigenvector of the Ricci tensor. Here, a similar procedure is used to construct generalized ladder operators for the Klein-Gordon equation with a scalar curvature term. It is proven that a ladder operator requires the existence of a conformal Killing vector, which must satisfy an additional property. This property is necessary and sufficient for the construction of a ladder operator. For maximally symmetric space-times, the results are equivalent to those of Cardoso, Houri and Kimura.
description: 8 pages, v2: version to appear in PRD
Numerical Simulations in Particle Physics
Creators: name: Karsch, F.
name: Laermann, E.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Numerical simulations have become an important tool to understand and predict non-perturbative phenomena in particle physics. In this article we attempt to present a general overview over the field. First, the basic concepts of lattice gauge theories are described, including a discussion of currently used algorithms and the reconstruction of continuum physics from lattice results. We then proceed to present some results for QCD, both at low energies and at high temperatures, as well as for the electro-weak sector of the standard model.
description: 62 pages, TeX file, 15 figures (not included, upon request), includes macnum.tex, preprint.sty (IOP style), BI-TP 93/10, HLRZ-93-25
Separability and Entanglement of Identical Bosonic Systems
Creators: name: Wang, Xiao-Hong
name: Fei, Shao-Ming
name: Wu, Ke
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the separability of arbitrary $n$-dimensional multipartite identical bosonic systems. An explicit relation between the dimension and the separability is presented. In particular, for $n=3$, it is shown that the property of PPT (positive partial transpose) and the separability are equivalent for tripartite systems.
description: 4 pages
$η$ Carinae's Dusty Homunculus Nebula from Near-Infrared to Submillimeter Wavelengths: Mass, Composition, and Evidence for Fading Opacity
Creators: name: Morris, Patrick W.
name: Gull, Theodore R.
name: Hillier, D. John
name: Barlow, M. J.
name: Royer, Pierre
name: Nielsen, Krister
name: Black, John
name: Swinyard, Bruce
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Infrared observations of the dusty, massive Homunculus Nebula around the luminous blue variable $η$ Carinae are crucial to characterize the mass-loss history and help constrain the mechanisms leading to the Great Eruption. We present the 2.4 - 670 $μ$m spectral energy distribution, constructed from legacy ISO observations and new spectroscopy obtained with the {\em{Herschel Space Observatory}}. Using radiative transfer modeling, we find that the two best-fit dust models yield compositions which are consistent with CNO-processed material, with iron, pyroxene and other metal-rich silicates, corundum, and magnesium-iron sulfide in common. Spherical corundum grains are supported by the good match to a narrow 20.2 $μ$m feature. Our preferred model contains nitrides AlN and Si$_3$N$_4$ in low abundances. Dust masses range from 0.25 to 0.44 $M_\odot$ but $M_{\rm{tot}} \ge$ 45 $M_\odot$ in both cases due to an expected high Fe gas-to-dust ratio. The bulk of dust is within a 5$"$ $\times$ 7$"$ central region. An additional compact feature is detected at 390 $μ$m. We obtain $L_{\rm{IR}}$ = 2.96 $\times$ 10$^6$ $L_\odot$, a 25\% decline from an average of mid-IR photometric levels observed in 1971-1977. This indicates a reduction in circumstellar extinction in conjunction with an increase in visual brightness, allowing 25-40\% of optical and UV radiation to escape from the central source. We also present an analysis of $^{12}$CO and $^{13}$CO $J = 5-4$ through $9-8$ lines, showing that the abundances are consistent with expectations for CNO-processed material. The [$^{12}$C~{\sc{ii}}] line is detected in absorption, which we suspect originates in foreground material at very low excitation temperatures.
description: Accepted in ApJ
Effects of tensor forces in nuclear spin-orbit splittings from ab initio calculations
Creators: name: Shen, Shihang
name: Liang, Haozhao
name: Meng, Jie
name: Ring, Peter
name: Zhang, Shuangquan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A systematic and specific pattern due to the effects of the tensor forces is found in the evolution of spin-orbit splittings in neutron drops. This result is obtained from relativistic Brueckner-Hartree-Fock theory using the bare nucleon-nucleon interaction. It forms an important guide for future microscopic derivations of relativistic and nonrelativistic nuclear energy density functionals.
description: 14 pages, 3 figures
Rebuttal to: Has dark energy really been discovered in the Lab?
Creators: name: Beck, Christian
name: Mackey, Michael C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We argue that a recent discussion of Jetzer and Straumann [Phys. Lett. B 606, 77 (2005)] relating the measured noise spectrum in Josephson junctions to van der Waals forces is incorrect. The measured noise spectrum in Josephson junctions is a consequence of the fluctuation dissipation theorem and the Josephson effect and has nothing to do with van der Waals forces. Consequently, the argument of Jetzer and Straumann does not shed any light on whether dark energy can or cannot be measured using superconducting Josephson devices. We also point out that a more recent paper of Jetzer and Straumann [Phys. Lett. B 639, 57 (2006)] claiming that `zeropoint energies do not show up in any application of the fluctuation dissipation theorem' violates the standard view on the subject.
description: Answer to a criticism of Jetzer and Straumann [astro-ph/0411034] and answer to a new version of that criticism [astro-ph/0604522]. Abstract, introduction, and conclusions extended. Added new section VI 'Zeropoint energies and the fluctuation dissipation theorem'
The effect of the antioxidant alpha-tocopherol on the structure of phospholipid model membranes and lipid phase behaviour
Creators: name: Malia, Divya
Publisher: name: Imperial College London
Year: 2022

description: α-Tocopherol (vitamin E) is a powerful antioxidant within living cell membranes and whilst its antioxidant activity is well studied, its impact on lipids and lipid phase behaviour is less known. This work aims to elucidate how α-Tocopherol’s antioxidant function is enhanced at low concentrations within living cell membranes, and how its function could be best harnessed in increasing the shelf life of food products. The interaction of α-Tocopherol with phosphatidycholine model membranes has been analysed using X-ray diffraction, solid-state NMR, differential scanning calorimetry and microscopy techniques. Our work has found that α-Tocopherol behaves similarly to cholesterol in that it promotes fluidisation in parts of the membrane and rigidity in other parts. We show phase separation in giant unilamellar vesicles comprised of ternary mixtures of dipalmitylphosphatidylcholine, dioleoylphosphatdiylcholine and α-Tocopherol using fluorescence microscopy. This is a novel finding as prior to this, phase separation has only been associated to sterols or stanols. The implications of this are wide ranging, as in vivo it is likely α-Tocopherol is forming a liquid ordered type phase. From commercial perspective, replacing cholesterol with α-Tocopherol would be a healthier alternative. We have also reported the curvature inducing impact of α-Tocopherol in unsaturated phosphatidylcholines. X-ray diffraction data shows that α-Tocopherol induces an inverse hexagonal phase, which coexists with an Im3m inverse bicontinuous cubic phase at specific concentrations with dioleoylphosphatdiylcholine. We also report the formation of the hexagonal close packed phase which previously has only been reported once. This phase forms at certain compositions of α-Tocopherol, triolein (oil) and dioleylphosphatidylethanolamine. The formation of these curved structures demonstrates α-Tocopherol’s ability to minimise the water-oil interface as that is where oxidation reactions occur. Cubic phases are also extremely valuable for nutrient and drug delivery.
The Dawn of Artificial Intelligence: From Ancient Dreams to Mathematical Foundations
Creators: name: Sarikaya, Ferhat
Publisher: name: Zenodo
Year: 2024
Subjects: subject: Artificial intelligence
subject: Machine learning

description: The idea of artificial intelligence was born from questioning first principles — the wisdom of deciding that thought must occur in the brain, computation must take place on discrete, logically organised representations of things, and human intelligence must employ a deductive process. So lets take a trip around castle to see what went on that shaped one of humanity's greatest achievements.
Properties of scattering forms and their relation to associahedra
Creators: name: de la Cruz, Leonardo
name: Kniss, Alexander
name: Weinzierl, Stefan
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show that the half-integrands in the CHY representation of tree amplitudes give rise to the definition of differential forms -- the scattering forms -- on the moduli space of a Riemann sphere with $n$ marked points. These differential forms have some remarkable properties. We show that all singularities are on the divisor $\overline{\mathcal M}_{0,n} \backslash {\mathcal M}_{0,n}$. Each singularity is logarithmic and the residue factorises into two differential forms of lower points. In order for this to work, we provide a threefold generalisation of the CHY polarisation factor (also known as reduced Pfaffian) towards off-shell momenta, unphysical polarisations and away from the solutions of the scattering equations. We discuss explicitly the cases of bi-adjoint scalar amplitudes, Yang-Mills amplitudes and gravity amplitudes.
description: 40 pages, version to be published
Variable Potentials for Thermalized Light and Coupled Condensates
Creators: name: Dung, David
name: Kurtscheid, Christian
name: Damm, Tobias
name: Schmitt, Julian
name: Vewinger, Frank
name: Weitz, Martin
name: Klaers, Jan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: For over a decade, cold atoms in lattice potentials have been an attractive platform to simulate phenomena known from solid state theory, as the Mott-insulator transition. In contrast, the field of photonics usually deals with non-equilibrium physics. Recent advances towards photonic simulators of solid state equilibrium effects include polariton double-site and lattice experiments, as well as the demonstration of a photon condensate in a dye-filled microcavity. Here we demonstrate a technique to create variable micropotentials for light using thermo-optic imprinting within an ultrahigh-reflectivity mirror microcavity filled with a dye-polymer solution that is compatible with photon gas thermalization. By repeated absorption-emission cycles photons thermalize to the temperature of the dye solution, and in a single microsite we observe a photon Bose-Einstein microcondensate. Effective interactions between the otherwise nearly non-interacting photons are observed due to thermo-optic effects, and in a double-well system tunnel coupling between sites is demonstrated, as well as the hybridization of eigenstates. Prospects of the new experimental platform include photonic structures in which photons thermalize into entangled manybody states.
A comprehensive lattice study of SU(3) glueballs
Creators: name: UKQCD Collaboration
name: Bali, GS
name: Schilling, K
name: Hulsebos, A
name: Irving, AC
name: Michael, C
name: Stephenson, PW
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present a study of the $SU(3)$ glueball spectrum for all $J^{PC}$ values at lattice spacings down to $a^{-1}=3.73 (6)$ GeV ($β=6.4$) using lattices of size up to $32^4$. We extend previous studies and show that the continuum limit has effectively been reached. The number of clearly identified $J^{PC}$ states has been substantially increased. There are no clear signals for spin-exotic glueballs below 3 GeV. A comparison with current experimental glueball candidates is made.
description: 10 pages including 2 PS figures, Liverpool Preprint: LTH 303, Wuppertal Preprint: WUB 93-10
Social representations of natural hazard risk in Swiss mountain regions
Creators: name: Maidl, Elisabeth
name: Buchecker, Matthias
Publisher: name: MDPI
Year: 2018
Subjects: subject: 330 - Wirtschaft

description: The term “risk” is connoted with divergent meanings in natural hazard risk research and the practice of risk management. Whilst the technical definition is accurately defined, in practice, the term “risk” is often synonymously used with “danger”. Considering this divergence as a deficiency, risk communication often aims to correct laypersons’ understanding. We suggest to instead treat the variety of meanings as a resource for risk communication strategies. However, there is however to date no investigation of what laypersons’ meanings of risk actually comprise. To address this gap, we examine the meanings of risk by applying a social representations approach within a qualitative case study research design. Results of the study among inhabitants of Swiss mountain villages show that differences in meanings were found according to hazard experience and community size. We found commonly shared core representations and peripheral ones. We conclude with suggestions on how to make usage of
Algebraic characterization of gauge anomalies on a nontrivial bundle
Creators: name: John, P.
name: Moritsch, O.
name: Schweda, M.
name: Sorella, S. P.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the algebraic way of solving the descent equations corresponding to the BRST consistency condition for the gauge anomalies and the Chern--Simons terms on a nontrivial bundle. The method of decomposing the exterior derivative as a BRST commutator is extended to the present case.
description: 15 pages, LaTeX, no figures
Multi-boson block factorization of fermions
Creators: name: Giusti, Leonardo
name: Cè, Marco
name: Schaefer, Stefan
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The numerical computations of many quantities of theoretical and phenomenological interest are plagued by statistical errors which increase exponentially with the distance of the sources in the relevant correlators. Notable examples are baryon masses and matrix elements, the hadronic vacuum polarization and the light-by-light scattering contributions to the muon g-2, and the form factors of semileptonic B decays. Reliable and precise determinations of these quantities are very difficult if not impractical with state-of-the-art standard Monte Carlo integration schemes. I will review a recent proposal for factorizing the fermion determinant in lattice QCD that leads to a local action in the gauge field and in the auxiliary boson fields. Once combined with the corresponding factorization of the quark propagator, it paves the way for multi-level Monte Carlo integration in the presence of fermions opening new perspectives in lattice QCD. Exploratory results on the impact on the above mentioned observables will be presented.
description: 18 pages, 10 figures, Proceedings of the plenary talk given a 35th International Symposium on Lattice Field Theory (Lattice2017) - Granada, Spain
Selfgravitating Gas Spheres in a Box and Relativistic Clusters: Relation between Dynamical and Thermodynamical Stability
Creators: name: Bisnovatyi-Kogan, Gennady S.
name: Merafina, Marco
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We derive a variational principle for the dynamical stability of a cluster as a gas sphere in a box. Newtonian clusters are always dynamically stable and, for relativistic clusters, the relation between dynamical and thermodynamical instabilities is analyzed. The boundaries between dynamically and thermodynamically stable and unstable models are found numerically for relativistic stellar systems with different cut off parameters. A criterion based on binding energy curve is used for determination of the boundary of dynamical stability.
description: 10 figures
Technological infrastructure supporting the story network principle of the Atlas of the Ageing Society
Creators: name: Zanda, Adriana
name: Lutz, Jonas
name: Heymann, Alesya
name: Bleisch, Susanne
Publisher: name: Česká geografická společnost
Year: 2019
Subjects: subject: 330 - Wirtschaft

description: Atlases have a long tradition of showing and linking information for the exploration of various mostly spatially related topics. Be Atlas of the Ageing Society is an interactive platform illustrating age related data. It enables individuals to explore facts and information related to age and the ageing society. To support content representation as well as a diverse audience, we developed the “story network principle”, which embeds annotated visualizations into a network of information in order to allow storytelling with data. Enabling the exploration of such a multifaceted and highly interconnected data landscape, however, posed some technical challenges. Bis paper describes and discusses a back-end implementation that meets the requirements of the story network principle from a technical perspective. We detail and exemplify the design and implementation of the atlas infrastructure to enable others to benefit from our developments and approaches to the challenges. Be story network principle is potentially applicable to a range of applications such as other atlases or digital portfolios.
An Application of Deep Neural Networks in the Analysis of Stellar Spectra
Creators: name: Fabbro, Sebastien
name: Venn, Kim
name: O'Briain, Teaghan
name: Bialek, Spencer
name: Kielty, Collin
name: Jahandar, Farbod
name: Monty, Stephanie
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Spectroscopic surveys require fast and efficient analysis methods to maximize their scientific impact. Here we apply a deep neural network architecture to analyze both SDSS-III APOGEE DR13 and synthetic stellar spectra. When our convolutional neural network model (StarNet) is trained on APOGEE spectra, we show that the stellar parameters (temperature, gravity, and metallicity) are determined with similar precision and accuracy as the APOGEE pipeline. StarNet can also predict stellar parameters when trained on synthetic data, with excellent precision and accuracy for both APOGEE data and synthetic data, over a wide range of signal-to-noise ratios. In addition, the statistical uncertainties in the stellar parameter determinations are comparable to the differences between the APOGEE pipeline results and those determined independently from optical spectra. We compare StarNet to other data-driven methods; for example, StarNet and the Cannon 2 show similar behaviour when trained with the same datasets, however StarNet performs poorly on small training sets like those used by the original Cannon. The influence of the spectral features on the stellar parameters is examined via partial derivatives of the StarNet model results with respect to the input spectra. While StarNet was developed using the APOGEE observed spectra and corresponding ASSET synthetic data, we suggest that this technique is applicable to other wavelength ranges and other spectral surveys.
description: Accepted 19 December 2017 to MNRAS. 16 pages, 14 figures, 2 appendices
title: ADCO, Ordre cistercien : comptes. Secundum registrum monasteriorum ordinis Cisterciensis (1354), Cart. 170 (11 H 1159), f. 00053
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2019
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Ordre cistercien : comptes. Secundum registrum monasteriorum ordinis Cisterciensis (1354), Archives départementales de la Côte-d'Or, Cart. 170 (11 H 1159), f. 00053, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Ordre cistercien : comptes. Secundum registrum monasteriorum ordinis Cisterciensis (1354), Archives départementales de la Côte-d'Or, Cart. 170 (11 H 1159), f. 00053, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Kosterlitz--Thouless Phase Transitions on Discretized Random Surfaces
Creators: name: Matytsin, A.
name: Zaugg, P.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The large N limit of a one-dimensional infinite chain of random matrices is investigated. It is found that in addition to the expected Kosterlitz--Thouless phase transition this model exhibits an infinite series of phase transitions at special values of the lattice spacing ε_{pq}=\sin(πp/2q). An unusual property of these transitions is that they are totally invisible in the double scaling limit. A method which allows us to explore the transition regions analytically and to determine certain critical exponents is developed. It is argued that phase transitions of this kind can be induced by the interaction of two-dimensional vortices with curvature defects of a fluctuating random lattice.
description: 46 pages, 6 postscript figures
O(a) Perturbative improvement for Wilson fermions
Creators: name: Naik, Satchidananda
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The coefficient of the O(a)-improved Sheikholeslami-Wohlert action for Wilson fermions are perturbatively determined at one-loop level and estimated at two-loop level.
description: 8-pages + (two pages of Fig.s) MPI-ph/93-24
Superbroadcasting and classical information
Creators: name: Chiribella, G.
name: D'Ariano, G. M.
name: Macchiavello, C.
name: Perinotti, P.
name: Buscemi, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We address the problem of broadcasting N copies of a generic qubit state to M>N copies by estimating its direction and preparing a suitable output state according to the outcome of the estimate. This semiclassical broadcasting protocol is more restrictive than a general one, since it requires an intermediate step where classical information is extracted and processed. However, we prove that a suboptimal superbroadcasting, namely broadcasting with simultaneous purification of the local output states with respect to the input ones, is possible. We show that in the asymptotic limit of $M \to \infty$ the purification rate converges to the optimal one, proving the conjecture that optimal broadcasting and state estimation are asymptotically equivalent. We also show that it is possible to achieve superbroadcasting with simultaneous inversion of the Bloch vector direction (universal NOT). We prove that in this case the semiclassical procedure of state estimation and preparation turns out to be optimal. We finally analyse semiclassical superbroadcasting in the phase-covariant case.
description: 9 pages, 2 figures
Positioning responsible learning analytics in the context of STEM identities of under-served students
Creators: name: Grimm, Adrian
name: Steegh, Anneke
name: Çolakoğlu, Jasmin
name: Kubsch, Marcus
name: Neumann, Knut
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: STEM identity
subject: under-served students
subject: responsible learning analytics
subject: equity
subject: bias
subject: intersectionality
subject: 500 Naturwissenschaften und Mathematik::500 Naturwissenschaften::507 Ausbildung, Forschung, verwandte Themen

description: Addressing 21st century challenges, professionals competent in science, technology, engineering, and mathematics (STEM) will be indispensable. A stronger individualisation of STEM learning environments is commonly considered a means to help more students develop the envisioned level of competence. However, research suggests that career aspirations are not only dependent on competence but also on STEM identity development. STEM identity development is relevant for all students, but particularly relevant for already under-served students. Focusing solely on the development of competence in the individualisation of STEM learning environments is not only harming the goal of educating enough professionals competent in STEM, but may also create further discrimination against those students already under-served in STEM education. One contemporary approach for individualisation of learning environments is learning analytics. Learning analytics are known to come with the threat of the reproduction of historically grown inequalities. In the research field, responsible learning analytics were introduced to navigate between potentials and threats. In this paper, we propose a theoretical framework that expands responsible learning analytics by the context of STEM identity development with a focus on under-served students. We discuss two major issues and deduce six suppositions aimed at guiding the use of as well as future research on the use of learning analytics in STEM education. Our work can inform political decision making on how to regulate learning analytics in STEM education to help providing a fair chance for the development of STEM identities for all students.
Vamos brincar reciclando
Creators: name: Siqueira Junior, Cesar Luis
name: Amaral, Larissa dos Santos
name: Siqueira, Flávia Gomes de Abrêu
name: Neves, Raquel A. F.
Publisher: name: Zenodo
Year: 2024

description: Este produto técnico integra o projeto interinstitucional Meio Ambiente Informa, desenvolvido pela Pró-Reitoria de Extensão e Cultura (ProExC) da Universidade Federal do Estado do Rio de Janeiro (UNIRIO) e pelo Instituto Realizando o Futuro (IRF) sob convênio n° 941759/2023.
Improvement of two-way continuous-variable quantum key distribution with virtual photon subtraction
Creators: name: Zhao, Yijia
name: Zhang, Yi-Chen
name: Li, Zhengyu
name: Yu, Song
name: Guo, Hong
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a method to improve the performance of two-way continuous-variable quantum key distribution protocol by virtual photon subtraction. The Virtual photon subtraction implemented via non-Gaussian post-selection not only enhances the entanglement of two-mode squeezed vacuum state but also has advantages in simplifying physical operation and promoting efficiency. In two-way protocol, virtual photon subtraction could be applied on two sources independently. Numerical simulations show that the optimal performance of renovated two-way protocol is obtained with photon subtraction only used by Alice. The transmission distance and tolerable excess noise are improved by using the virtual photon subtraction with appropriate parameters. Moreover, the tolerable excess noise maintains a high value with the increase of distance so that the robustness of two-way continuous-variable quantum key distribution system is significantly improved, especially at long transmission distance.
description: 15 pages, 6 figures
Opening a New Window to Fundamental Physics and Astrophysics: X-ray Polarimetry
Creators: name: Costa, E.
name: Bellazzini, R.
name: Soffitta, P.
name: di Persio, G.
name: Feroci, M.
name: Morelli, E.
name: Muleri, F.
name: Pacciani, L.
name: Rubini, A.
name: Baldini, L.
name: Bitti, F.
name: Brez, A.
name: Cavalca, F.
name: Latronico, L.
name: Massai, M. M.
name: Omodei, N.
name: Sgro', C.
name: Spandre, G.
name: Matt, G.
name: Perola, G. C.
name: Santangelo, A.
name: Celotti, A.
name: Barret, D.
name: Vilhu, O.
name: Piro, L.
name: Fraser, G.
name: Courvoisier, T. J. -L.
name: Barcons, X.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An extensive theoretical literature predicts that X-ray Polarimetry can directly determine relevant physical and geometrical parameters of astrophysical sources, and discriminate between models further than allowed by spectral and timing data only. X-ray Polarimetry can also provide tests of Fundamental Physics. A high sensitivity polarimeter in the focal plane of a New Generation X-ray telescope could open this new window in the High Energy Sky.
description: 8 pages 1 table 14 figures
A credit rating model in a fuzzy inference system environment
Creators: name: Yazdi, Amir Karbassi
name: Hanne, Thomas
name: Wang, Yong J.
name: Wee, Hui-Ming
Publisher: name: MDPI
Year: 2019
Subjects: subject: 330 - Wirtschaft

description: One of the most important functions of an export credit agency (ECA) is to act as an intermediary between national governments and exporters. These organizations provide financing to reduce the political and commercial risks in international trade. The agents assess the buyers based on financial and non-financial indicators to determine whether it is advisable to grant them credit. Because many of these indicators are qualitative and inherently linguistically ambiguous, the agents must make decisions in uncertain environments. Therefore, to make the most accurate decision possible, they often utilize fuzzy inference systems. The purpose of this research was to design a credit rating model in an uncertain environment using the fuzzy inference system (FIS). In this research, we used suitable variables of agency ratings from previous studies and then screened them via the Delphi method. Finally, we created a credit rating model using these variables and FIS including related IF-THEN rules which can be applied in a practical setting.
Fields in middle school energy instruction to support continued learning of energy
Creators: name: Fiedler, Kristin
name: Kubsch, Marcus
name: Neumann, Knut
name: Nordine, Jeffrey
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Concepts & principles
subject: Instructional strategies
subject: 500 Naturwissenschaften und Mathematik::500 Naturwissenschaften::507 Ausbildung, Forschung, verwandte Themen

description: Science education research has repeatedly revealed students’ problems with understanding the energy concept, in particular, their understanding of potential energy. Newer research suggests that teaching students fields as a means to store potential energy may promote a more consistent understanding of the energy concept. Yet, it is presently unknown if the helpfulness of fields is limited to particular manifestations of potential energy or if the conceptualization of potential energy as energy stored in fields may constitute a coherent approach that supports students’ continued learning on energy. To address this issue, we carried out a quasiexperimental pre-post-test study with N=64 students from grade 6, with students being assigned to one of two conditions (fields-based vs nonfields-based approach to energy instruction). We also compared students continued learning in a subsequent unit on electric energy. Our findings suggest that students in the fields approach not only outperformed students in the nonfields approach, they were, in particular, able to use their understanding of potential energy to make better sense of electric energy, a form of energy previously unknown to them. The results of our study imply that fields can help students develop a deeper understanding of energy, in particular potential energy, and support continued learning about energy; that is, the learning about additional forms of energy.
Baby universes and energy (non-)conservation in (1+1)-dimensional dilaton gravity
Creators: name: Rubakov, V. A.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider branching of baby universes off parent one in (1+1)-dimensional dilaton gravity with 24 types of conformal matter fields. This theory is equivalent to string theory in a certain background in D=26-dimensional target space, so this process may be also viewed as the emission of a light string state by a heavy string. We find that bare energy is not conserved in (1+1) dimensions due to the emission of baby universes, and that the probability of this process is finite even for local distribution of matter in the parent universe. We present a scenario suggesting that the non-conservation of bare energy may be consistent with the locality of the baby universe emission process in (1+1) dimensions and the existence of the long ranged dilaton field whose source is bare energy. This scenario involves the generation of longitudinal gravitational waves in the parent universe.
description: 29 pages, LaTeX, 5 figures in LaTeX, 2 figures in PostScript
The XY Model on a Dynamical Random Lattice
Creators: name: Catterall, S.
name: Kogut, J.
name: Renken, R.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the XY model on a lattice with fluctuating connectivity. The expectation is that at an appropriate critical point such a system corresponds to a compactified boson coupled to 2d quantum gravity. Our simulations focus, in particular, on the important topological features of the system. The results lend strong support to the two phase structure predicted on the basis of analytical calculations. A careful finite size scaling analysis yields estimates for the critical exponents in the low temperature phase.
description: 19 pages 11 figures, ILL-(TH)-93-5
Rethinking Split Manufacturing: An Information-Theoretic Approach with Secure Layout Techniques
Creators: name: Sengupta, Abhrajit
name: Patnaik, Satwik
name: Knechtel, Johann
name: Ashraf, Mohammed
name: Garg, Siddharth
name: Sinanoglu, Ozgur
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Split manufacturing is a promising technique to defend against fab-based malicious activities such as IP piracy, overbuilding, and insertion of hardware Trojans. However, a network flow-based proximity attack, proposed by Wang et al. (DAC'16) [1], has demonstrated that most prior art on split manufacturing is highly vulnerable. Here in this work, we present two practical layout techniques towards secure split manufacturing: (i) gate-level graph coloring and (ii) clustering of same-type gates. Our approach shows promising results against the advanced proximity attack, lowering its success rate by 5.27x, 3.19x, and 1.73x on average compared to the unprotected layouts when splitting at metal layers M1, M2, and M3, respectively. Also, it largely outperforms previous defense efforts; we observe on average 8x higher resilience when compared to representative prior art. At the same time, extensive simulations on ISCAS'85 and MCNC benchmarks reveal that our techniques incur an acceptable layout overhead. Apart from this empirical study, we provide---for the first time---a theoretical framework for quantifying the layout-level resilience against any proximity-induced information leakage. Towards this end, we leverage the notion of mutual information and provide extensive results to validate our model.
description: Published in Proc. International Conference On Computer Aided Design (ICCAD) 2017; [v2] minor fix Fig 11: avg area overhead for g-type2 was miscalculated; [v3] added DOI to PDF footer
Convergence theorems for quantum annealing
Creators: name: Morita, Satoshi
name: Nishimori, Hidetoshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We prove several theorems to give sufficient conditions for convergence of quantum annealing, which is a protocol to solve generic optimization problems by quantum dynamics. In particular the property of strong ergodicity is proved for the path-integral Monte Carlo implementation of quantum annealing for the transverse Ising model under a power decay of the transverse field. This result is to be compared with the much slower inverse-log decay of temperature in the conventional simulated annealing. Similar results are proved for the Green's function Monte Carlo approach. Optimization problems in continuous space of particle configurations are also discussed.
description: 19 pages
Coherent scattering from semi-infinite non-Hermitian potentials
Creators: name: Ahmed, Zafar
name: Ghosh, Dona
name: Kumar, Sachin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Mathematical Physics (math-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: When two identical (coherent) beams are injected at a semi-infinite non-Hermitian medium from left and right, we show that both reflection $(r_L,r_R)$ and transmission $(t_L,t_R)$ amplitudes are non-reciprocal. In a parametric domain, there exists Spectral Singularity (SS) at a real energy $E=E_*$ and the determinant of the time-reversed two port S-matrix i.e., $|\det(S)|=|t_L t_R-r_L r_R|$ vanishes sharply at $E=E_*$ displaying the phenomenon of Coherent Perfect Absorption (CPA). In the complimentary parametric domain, the potential becomes either left or right reflectionless at $E=E_z$. But we rule out the existence of Invisibility despite $r_R(E_i)=0$ and $t_R(E_i)=1$ in these new models. We present two simple exactly solvable models where the expressions for $E_*$, $E_z$, $E_i$ and the parametric conditions on the potential have been obtained in explicit and simple forms. Earlier, the novel phenomena of SS and CPA have been found to occur only in the scattering complex potentials which are spatially localized (vanish asymptotically) and having $t_L=t_R$.
description: Six pages, 3 figures, no table, language improved
On Orbifolds of (0,2) Models
Creators: name: Blumenhagen, Ralph
name: Sethi, Savdeep
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study orbifolds of (0,2) models, including some cases with discrete torsion. Our emphasis is on models which have a Landau-Ginzburg realization, where we describe part of the massless spectrum by computing the elliptic genus for the orbifolded theory. Somewhat surprisingly, we find simple examples of (0,2) mirror pairs that are related by a quotient action. We present a detailed description of a family of such pairs.
description: 19 pages, harvmac (b); minor changes to the discussion
A Short Survey Instrument to Segment Populations According to Their Attitudes Toward Science. Scale Development, Optimization and Assessment
Creators: name: Füchslin, Tobias
name: Schäfer, Mike S.
name: Metag, Julia
Publisher: name: Taylor & Francis
Year: 2018
Subjects: Medicine
Developmental Biology
Science Policy

description: Surveys play a key role in researching public perceptions of and attitudes toward science. Accordingly, there is a breadth of often-used survey instruments available which have also been adopted for segmentation analyses. Even though many of these segmentation solutions are similar in their aims, they often include a large numbers of variables, making it more difficult for other researchers to build on these solutions, as survey time is scarce. Therefore, we demonstrate how a large number of variables that were used for a comprehensive segmentation analysis can be reduced considerably without losing too much information. We develop and test a short survey instrument to segment populations according to their attitudes toward science. Results show that segmentation results can be replicated with over 90% accuracy by reducing the instrument from 20 to 10 variables. This reduction does not significantly affect the predictive power of segment attribution on three dependent variables, which suggests that many segmentation analyses could be similarly optimized, helping researchers save survey time and standardize segmentation analyses more.