cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
การออกแบบและสร้างอุปกรณ์เติมอากาศในน้ำชนิดใบพัดแบบหนามทุเรียนด้วยพลังงานแสงอาทิตย์
Creators: name: อุทัย ผ่องรัศมี
Publisher: name: มหาวิทยาลัยราชภัฏเพชรบุรี
Year: 2020
Subjects: ออกซิเจนในน้ำ
พลังงานแสงอาทิตย์
ใบพัดหนามทุเรียน

description: วารสารวิทยาศาสตร์แห่งมหาวิทยาลัยราชภัฏเพชรบุรี, 17, 2, 76-87
Data and code for: Sources of nitrous oxide emissions from agriculturally managed peatlands
Creators: name: Wang, Yuqiao
name: Leifeld, Jens
name: Calanca, Pierluigi
Publisher: name: Zenodo
Year: 2023

description: This contains the R code and all the data required to run the code used for all data analysis in the manuscript titled:

" Sources of nitrous oxide emissions from agriculturally managed peatlands" by:

Yuqiao Wang, Pierluigi Calanca, and Jens Leifeld

an article accepted for publication in: Global Change Biology.

Please check the gitlab repo yclover11/Peatland_N2O (github.com) for any updates.
Self-organized Multi-Frequency Clusters in an Oscillating Electrochemical System with Strong Nonlinear Coupling
Creators: name: Patzauer, Maximilian
name: Krischer, Katharina
Publisher: name: arXiv
Year: 2020
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We study the spatio-temporal dynamics of the oscillatory photo-electrodissolution of n-type Si in a fluoride-containing electrolyte under anodic potentials using in-situ ellipsometric imaging. When lowering the illumination intensity step-wise, we successively observe uniform oscillations, modulated amplitude clusters, and the coexistence of multi-frequency clusters i.e., regions with different frequencies, with a stationary domain. We argue that the multi-frequency clusters emerge due to an adaptive, nonlinear, and nonlocal coupling, similar to those found in the context of neural dynamics.
description: 7 pages, 4 figures, v2 with corrected reference formatting
A stochastic derivation of the geodesic rule
Creators: name: Kalogeropoulos, Nikos
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We argue that the geodesic rule, for global defects, is a consequence of the randomness of the values of the Goldstone field $ϕ$ in each causally connected volume. As these volumes collide and coalescence, $ϕ$ evolves by performing a random walk on the vacuum manifold $\mathcal{M}$. We derive a Fokker-Planck equation that describes the continuum limit of this process. Its fundamental solution is the heat kernel on $\mathcal{M}$, whose leading asymptotic behavior establishes the geodesic rule.
description: 12 pages, No figures. To be published in Int. Jour. Mod. Phys. A
Aharonov-Casher effect in a two dimensional hole gas with spin-orbit interaction
Creators: name: Kovalev, Alexey A.
name: Borunda, Mario F.
name: Jungwirth, T.
name: Molenkamp, L. W.
name: Sinova, Jairo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the quantum interference effects induced by the Aharonov-Casher phase in a ring structure in a two-dimensional heavy hole (HH) system with spin-orbit interaction realizable in narrow asymmetric quantum wells. The influence of the spin-orbit interaction strength on the transport is investigated analytically. These analytical results allow us to explain the interference effects as a signature of the Aharonov-Casher Berry phases. Unlike previous studies on the electron two-dimensional Rashba systems, we find that the frequency of conductance modulations as a function of the spin-orbit strength is not constant but increases for larger spin-orbit splittings. In the limit of thin channel rings (width smaller than Fermi wavelength), we find that the spin-orbit splitting can be greatly increased due to quantization in the radial direction. We also study the influence of magnetic field considering both limits of small and large Zeeman splittings.
description: 6 pages, 4 figures
title: Alkemie Revue semestrielle de littérature et philosophie. 2015-1, n° 15
title: L'Éros
titleType: Subtitle
Creators: name: (:Unap)
Publisher: name: Classiques Garnier
Year: 2015
Subjects: subject: Éros
subject: Érotisme
subject: Sensualité
subject: Cioran
subject: Philosophie
subject: Littérature
subject: Bataille
subject: Poésie

description: Contributeurs : Aurélien Demars, Constantin Abaluta, Ciprian Vălcan, Marie-Hélène Gauthier, Sylvain Louet, Tayeb Ainseba, Alberto Russo, Anne Steinberg, Takeshi Sakai, Michal Krzykawski, Stéphanie Michineau, Lucie Lavergne, Patrice Bollon, José Thomaz Brum, Ger Leppers, Caroline Laurent, Joan Manuel Marín Torres, Philippe D. Dracodaïdis, Marc Bonnant, Ger Groot, Massimo Carloni, Giovanni Rotiroti, Constantin Zaharia, Mihaela-Genţiana Stănişor, Roland Jaccard, Michel Lambert, Odette Barbero, Astrid Waliszek, Sandrine Davin.
A concise introduction to Colombeau generalized functions and their applications in classical electrodynamics
Creators: name: Gsponer, Andre
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The objective of this introduction to Colombeau algebras of generalized-functions (in which distributions can be freely multiplied) is to explain in elementary terms the essential concepts necessary for their application to basic non-linear problems in classical physics. Examples are given in hydrodynamics and electrodynamics. The problem of the self-energy of a point electric charge is worked out in detail: The Coulomb potential and field are defined as Colombeau generalized-functions, and integrals of nonlinear expressions corresponding to products of distributions (such as the square of the Coulomb field and the square of the delta-function) are calculated. Finally, the methods introduced in Eur. J. Phys. /28/ (2007) 267-275, 1021-1042, and 1241, to deal with point-like singularities in classical electrodynamics are confirmed.
description: 19 pages. Accepted for publication
Bulletin de la Société Paul Claudel Vocal et pictural dans Le Soulier de satin. 2015 - 2, n° 216
Creators: name: (:Unap)
Publisher: name: Classiques Garnier
Year: 2015
Subjects: subject: Les arts plastiques dans Le Soulier de satin de Paul Claudel
subject: La diction dans Le Soulier de satin de Paul Claudel
subject: Paul Claudel et le Japon
subject: Paul Claudel et l'artiste Audrey Parr
subject: Paul Claudel et le peintre Jean Charlot

description: Contributeurs : Christèle Barbier, Shinobu Chujo, François Claudel, Sophie Gaillard, Michel Itty, Pascal Lécroart, Jacques Parsi, Anne Pellois, Francine Reith et Michel Wasserman.
การวิเคราะห์กระบวนการผลิตแผ่นยางพารา กรณีศึกษาของบริษัท: สวนหลวงราชไมตรี อ.เมือง จ. จันทบุรี
Creators: name: ปรัชภรณ์ เศรษฐเสถียร
Publisher: name: มหาวิทยาลัยราชภัฏเพชรบุรี
Year: 2020
Subjects: กระบวนการผลิตแผ่นยางพารา
แผนภาพกระบวนการไหล
การปรับปรุงกระบวนการผลิต

description: วารสารวิทยาศาสตร์แห่งมหาวิทยาลัยราชภัฏเพชรบุรี, 17, 2, 88-98
Vibrational model of thermal conduction for fluids with soft interactions
Creators: name: Khrapak, S. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A vibrational model of heat transfer in simple liquids with soft pairwise interatomic interactions is discussed. A general expression is derived, which involves an averaging over the liquid collective mode excitation spectrum. The model is applied to quantify heat transfer in a dense Lennard-Jones liquid and a strongly coupled one-component plasma. Remarkable agreement with the available numerical results is documented. A similar picture does not apply to the momentum transfer and shear viscosity of liquids.
description: 8 pages, 5 figures
PT-symmetric deformations of Calogero models
Creators: name: Fring, Andreas
name: Znojil, Miloslav
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We demonstrate that Coxeter groups allow for complex PT-symmetric deformations across the boundaries of all Weyl chambers. We compute the explicit deformations for the A_2 and G_2-Coxeter group and apply these constructions to Calogero-Moser-Sutherland models invariant under the extended Coxeter groups. The eigenspecta for the deformed models are real and contain the spectra of the undeformed case as subsystem.
description: 19 pages, 2 figures, version acepted for publication
Lifshitz tails at spectral edge and holography with a finite cutoff
Creators: name: Gorsky, Alexander
name: Nechaev, Sergei
name: Valov, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose the holographic description of the Lifshitz tail typical for one-particle spectral density of bounded disordered system in $D=1$ space. To this aim the "polymer representation" of the Jackiw-Teitelboim (JT) 2D dilaton gravity at a finite cutoff is used and the corresponding partition function is considered as the weighted sum over paths of fixed length in an external magnetic field. We identify the regime of small loops, responsible for emergence of a Lifshitz tail in the Gaussian disorder, and relate the strength of disorder to the boundary value of the dilaton. The geometry corresponding to the Poisson disorder in the boundary theory involves random paths fluctuating in the vicinity of the hard impenetrable cut-off disc in a 2D plane. It is shown that the ensemble of "stretched" paths evading the disc possesses the Kardar-Parisi-Zhang (KPZ) scaling for fluctuations, which is the key property that ensures the dual description of the Lifshitz tail in the spectral density for the Poisson disorder.
description: 36 pages, 8 figures
Storia del Concilio Ecumenico Vaticano II da Giovanni XXIII a Paolo VI (1959-1965)
Creators: name: Palese, Salvatore
Publisher: name: Apulia Theologica
Year: 2025

description: Apulia Theologica, V. 3 N. 1 (2017): Apulia theologica vol. 3, fascicolo 1
Regulating Fintech in Canada and the United States: Comparison, Challenges and Opportunities
Creators: name: Clements, Ryan
Publisher: name: The School of Public Policy Publications
Year: 2019

description: This article compares the regulatory frameworks, challenges and opportunities in financial technology (fintech) in Canada and the United States. Fintech is explored as a post 2008 global financial crisis phenomenon by reviewing the diverse interpretations of its definition, identifying its historical underpinnings, and noting industry trends and associated demand factors. The market environment, and regulatory approach, in Canada and the U.S. is not homogenous, and although there are similarities, each jurisdiction faces different challenges and opportunities. In the U.S., fintech has significant disintermediation potential, and supervisory structures exhibit fragmentation under a rules-based framework. Nevertheless, there is growing desire for principle-based regimes in the U.S., and several federal and state regulators have instituted “regulatory sandboxes.” Canada is characterized by principle-based regulation and features a robust sandbox in securities jurisdiction; yet fintech is largely being experienced as a bank-driven phenomenon, and bank-fintech partnerships are visible, as incumbents use fintech to enhance customer service and operations. Regulatory fragmentation does, however, present an entry cost for new consumer-facing firms in Canadian fintech sectors not falling within the ambit of federal financial institution oversight. Similarities and differences between the U.S. and Canada are explored in this article across multiple fintech sectors including fintech banking, cryptocurrency (cryptocurrency as money, cryptocurrency funds and derivatives, and initial coin offerings), fintech credit (peer-to-peer lending), payments, algorithmic wealth management (robo-advisors) and financial account aggregators. The article also discusses regulatory adaptations such as sandboxes; the status of large-scale financial blockchain implementation projects; the emergence of "regtech"; international regulatory coordination efforts; self-regulatory structures; systemic risk considerations; and optimal regulatory design principles, given continuing market and product complexity. Fintech presents opportunities - like lower costs, enhanced product and service scope, greater credit and financial inclusion – and unique new risks (which are explored in detail in the article) as well as challenges for regulators, such as creating laws that accurately capture new technology and keeping pace with constantly evolving innovations. Regulators must also balance encouraging innovation and competition with effective risk management and supervision.
description: The School of Public Policy Publications, Vol 12 (2019)
Stable $π$-radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) adsorbed at the elbows of $22\times\sqrt{3}$ reconstructed Au(111)
Creators: name: Vranik, Radovan
name: Stetsovych, Vitalii
name: Feigl, Simon
name: Müllegger, Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Stable organic radicals serve as model systems for investigating metal-free magnetic phenomena at (sub)nanometer length scales. We have investigated at the single-molecule level the stable $π$-radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) adsorbed at the elbow sites of the $22\times\sqrt{3}$ reconstructed Au(111) surface. Low-temperature scanning tunneling microscopy (STM) and -spectroscopy under ultrahigh vacuum conditions at 8~K reveal structural as well as frontier-orbital related electronic details of DPPH/Au(111). A Kondo-like spectroscopic signature indicates preservation of the unpaired electron spin state.
Hidden momentum in continuous media and the Abraham-Minkowski debate
Creators: name: Corrêa, Raul
name: Saldanha, Pablo L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We perform a detailed study of the connection between hidden momentum and the Abraham-Minkowski debate about the electromagnetic momentum density in material media. The results of a previous work on the subject [P. L. Saldanha and J. S. Oliveira Filho, Phys. Rev. A 95, 043804 (2017)] are extended to the continuous medium limit, where some subtleties arise. We consider a polarized and magnetized continuous medium with applied electric and magnetic static fields, where the medium polarization can be due to either an electric charge density or a hypothetical magnetic current density and the medium magnetization can be due to either an electric current density or a hypothetical magnetic charge density. Each model leads to a different expression for the system material hidden momentum and for the electromagnetic momentum density in the medium. We show that the main results of the cited reference are sustained in the continuous medium limit: Abraham momentum is compatible with a model for the medium where the polarization is due to electric charges and the magnetization is due to magnetic charges, Minkowski momentum is compatible to a model where the polarization is due to magnetic currents and the magnetization is due to electric currents, and the expression $\varepsilon_0\mathbf{E}\times\mathbf{B}$ is compatible with a model where the polarization is due to electric charges and the magnetization is due to electric currents, which is the natural model. These results are illustrated with the example of a uniformly polarized and magnetized sphere.
description: 11 pages, 1 figure
Decay properties of $N^*(1895)$
Creators: name: Khemchandani, K. P.
name: Torres, A. Martinez
name: Nagahiro, H.
name: Hosaka, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The nature of nucleon resonances is still being debated, while much experimental data are accumulated. In this work, we focus on the negative parity resonance $N^*(1895)$ which is located in the scattering region of various meson-baryon coupled channels, and such dynamics can be crucial in understanding its properties. To test the relevance of such hadron dynamics, we investigate the decay properties of $N^*(1895)$ in detail. We examine how a two pole nature of $N^*(1895)$ is compatible with its observed decay properties. Moreover, we find that the resonance decays into final states involving $Λ(1405)$ and $Σ(1400)$, where the latter is not yet observed experimentally. Such decay processes can be useful to study the properties of the aforementioned hyperon resonances.
Quantum hypercomputation based on the dynamical algebra su(1,1)
Creators: name: Sicard, Andrés
name: Ospina, Juan
name: Vélez, Mario
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An adaptation of Kieu's hypercomputational quantum algorithm (KHQA) is presented. The method that was used was to replace the Weyl-Heisenberg algebra by other dynamical algebra of low dimension that admits infinite-dimensional irreducible representations with naturally defined generalized coherent states. We have selected the Lie algebra $\mathfrak{su}(1,1)$, due to that this algebra posses the necessary characteristics for to realize the hypercomputation and also due to that such algebra has been identified as the dynamical algebra associated to many relatively simple quantum systems. In addition to an algebraic adaptation of KHQA over the algebra $\mathfrak{su}(1,1)$, we presented an adaptations of KHQA over some concrete physical referents: the infinite square well, the infinite cylindrical well, the perturbed infinite cylindrical well, the P{ö}sch-Teller potentials, the Holstein-Primakoff system, and the Laguerre oscillator. We conclude that it is possible to have many physical systems within condensed matter and quantum optics on which it is possible to consider an implementation of KHQA.
description: 25 pages, 1 figure, conclusions rewritten, typing and language errors corrected and latex format changed minor changes elsewhere and l
Contact processes with long-range interactions
Creators: name: Ginelli, F.
name: Hinrichsen, H.
name: Livi, R.
name: Mukamel, D.
name: Torcini, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A class of non-local contact processes is introduced and studied using mean-field approximation and numerical simulations. In these processes particles are created at a rate which decays algebraically with the distance from the nearest particle. It is found that the transition into the absorbing state is continuous and is characterized by continuously varying critical exponents. This model differs from the previously studied non-local directed percolation model, where particles are created by unrestricted Levy flights. It is motivated by recent studies of non-equilibrium wetting indicating that this type of non-local processes play a role in the unbinding transition. Other non-local processes which have been suggested to exist within the context of wetting are considered as well.
description: Accepted with minor revisions by Journal of Statistical Mechanics: Theory and experiments
The Role of Interpretable Patterns in Deep Learning for Morphology
Creators: name: Acs, Judit
name: Kornai, Andras
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: We examine the role of character patterns in three tasks: morphological analysis, lemmatization and copy. We use a modified version of the standard sequence-to-sequence model, where the encoder is a pattern matching network. Each pattern scores all possible N character long subwords (substrings) on the source side, and the highest scoring subword's score is used to initialize the decoder as well as the input to the attention mechanism. This method allows learning which subwords of the input are important for generating the output. By training the models on the same source but different target, we can compare what subwords are important for different tasks and how they relate to each other. We define a similarity metric, a generalized form of the Jaccard similarity, and assign a similarity score to each pair of the three tasks that work on the same source but may differ in target. We examine how these three tasks are related to each other in 12 languages. Our code is publicly available.
description: Best paper at the Hungarian NLP conference (MSZNY2020)
Variational approach for the quantum Zakharov system
Creators: name: Haas, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The quantum Zakharov system is described in terms of a Lagrangian formalism. A time-dependent Gaussian trial function approach for the envelope electric field and the low-frequency part of the density fluctuation leads to a coupled, nonlinear system of ordinary differential equations. In the semiclassic case, linear stability analysis of this dynamical system shows a destabilizing rôle played by quantum effects. Arbitrary value of the quantum effects are also considered, yielding the ultimate destruction of the localized, Gaussian trial solution. Numerical simulations are shown both for the semiclassic and the full quantum cases.
description: 6 figures
Constraint on the Effective Number of Neutrino Species from the WMAP and SDSS LRG Power Spectra
Creators: name: Ichikawa, Kazuhide
name: Kawasaki, Masahiro
name: Takahashi, Fuminobu
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive constraint on the effective number of neutrino species N_nu from the cosmic microwave background power spectrum of the WMAP and galaxy clustering power spectrum of the SDSS luminous red galaxies (LRGs). Using these two latest data sets of CMB and galaxy clustering alone, we obtain the limit 0.9 < N_nu < 8.2 (95% C.L.) for the power-law LambdaCDM flat universe, with no external prior. The lower limit corresponds to the lower bound on the reheating temperature of the universe T_R > 2 MeV.
description: 16 pages, 3 figure. (v2) More explanation and discussion on our analysis. A section and figures are added
Chemical pressure and hidden one-dimensional behavior in rare earth tri-telluride charge density wave compounds
Creators: name: Sacchetti, A.
name: Degiorgi, L.
name: Giamarchi, T.
name: Ru, N.
name: Fisher, I. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the first optical measurements of the rare-earth tri-telluride charge-density-wave systems. Our data, collected over an extremely broad spectral range, allow us to observe both the Drude component and the single-particle peak, ascribed to the contributions due to the free charge carriers and to the charge-density-wave gap excitation, respectively. The data analysis displays a diminishing impact of the charge-density-wave condensate on the electronic properties with decreasing lattice constant across the rare-earth series. We propose a possible mechanism describing this behavior and we suggest the presence of a one-dimensional character in these two-dimensional compounds. We also envisage that interactions and umklapp processes might play a relevant role in the formation of the charge-density-wave state in these compounds.
description: 8 pages, 5 figures
The star formation history of Eridanus II: on the role of SNe feedback in the quenching of ultra-faint dwarf galaxies
Creators: name: Gallart, C.
name: Monelli, M.
name: Ruiz-Lara, T.
name: Calamida, A.
name: Cassisi, S.
name: Cignoni, M.
name: Anderson, J.
name: Battaglia, G.
name: Bermejo-Climent, J. R.
name: Bernard, E. J.
name: Martínez-Vázquez, C. E.
name: Mayer, L.
name: Salvadori, S.
name: Monachesi, A.
name: Navarro, J. F.
name: Shen, S.
name: Surot, F.
name: Tosi, M.
name: Bajaj, V.
name: Strinfellow, G. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Eridanus II (EriII) is an ultra-faint dwarf (UFD) galaxy (M_V=-7.1) located at a distance close to the Milky Way virial radius. Early shallow color-magnitude diagrams (CMD) indicated that it possibly hosted an intermediate-age or even young stellar population, which is unusual for a galaxy of this mass. In this paper, we present new ACS/HST CMDs reaching the oldest main sequence turnoff with excellent photometric precision, and derive a precise star formation history (SFH) for this galaxy through CMD-fitting. This SFH shows that the bulk of the stellar mass in Eri II formed in an extremely short star formation burst at the earliest possible time. The derived star formation rate profile has a width at half maximum of 500 Myr and reaches a value compatible with null star formation 13 Gyr ago. However, tests with mock stellar populations and with the CMD of the globular cluster M92 indicate that the star formation period could be shorter than 100 Myr. From the quantitative determination of the amount of mass turned into stars in this early star formation burst (~2x10^5 Msun) we infer the number of SNe events and the corresponding energy injected into the interstellar medium. For reasonable estimates of the EriII virial mass and values of the coupling efficiency of the SNe energy, we conclude that EriII could be quenched by SNe feedback alone, thus casting doubts on the need to invoke cosmic reionization as the preferred explanation for the early quenching of old UFD galaxies.
description: 18 pages, 8 figures, ApJ, accepted Dec 29, 2020
Analytical solution of the bosonic three-body problem
Creators: name: Gogolin, Alexander O.
name: Mora, Christophe
name: Egger, Reinhold
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We revisit the problem of three identical bosons in free space, which exhibits a universal hierarchy of bound states (Efimov trimers). Modelling a narrow Feshbach resonance within a two-channel description, we map the integral equation for the three-body scattering amplitude to a one-dimensional Schrödinger-type single-particle equation, where an analytical solution of exponential accuracy is obtained. We give exact results for the trimer binding energies, the three-body parameter, the threshold to the three-atom continuum, and the recombination rate.
description: 4 pages, published version
Numerically Solving Parametric Families of High-Dimensional Kolmogorov Partial Differential Equations via Deep Learning
Creators: name: Berner, Julius
name: Dablander, Markus
name: Grohs, Philipp
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Numerical Analysis (math.NA)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We present a deep learning algorithm for the numerical solution of parametric families of high-dimensional linear Kolmogorov partial differential equations (PDEs). Our method is based on reformulating the numerical approximation of a whole family of Kolmogorov PDEs as a single statistical learning problem using the Feynman-Kac formula. Successful numerical experiments are presented, which empirically confirm the functionality and efficiency of our proposed algorithm in the case of heat equations and Black-Scholes option pricing models parametrized by affine-linear coefficient functions. We show that a single deep neural network trained on simulated data is capable of learning the solution functions of an entire family of PDEs on a full space-time region. Most notably, our numerical observations and theoretical results also demonstrate that the proposed method does not suffer from the curse of dimensionality, distinguishing it from almost all standard numerical methods for PDEs.
description: Accepted at NeurIPS 2020
Families of Quintic Calabi-Yau 3-Folds with Discrete Symmetries
Creators: name: Doran, Charles
name: Greene, Brian
name: Judes, Simon
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: At special loci in their moduli spaces, Calabi-Yau manifolds are endowed with discrete symmetries. Over the years, such spaces have been intensely studied and have found a variety of important applications. As string compactifications they are phenomenologically favored, and considerably simplify many important calculations. Mathematically, they provided the framework for the first construction of mirror manifolds, and the resulting rational curve counts. Thus, it is of significant interest to investigate such manifolds further. In this paper, we consider several unexplored loci within familiar families of Calabi-Yau hypersurfaces that have large but unexpected discrete symmetry groups. By deriving, correcting, and generalizing a technique similar to that of Candelas, de la Ossa and Rodriguez-Villegas, we find a calculationally tractable means of finding the Picard-Fuchs equations satisfied by the periods of all 3-forms in these families. To provide a modest point of comparison, we then briefly investigate the relation between the size of the symmetry group along these loci and the number of nonzero Yukawa couplings. We include an introductory exposition of the mathematics involved, intended to be accessible to physicists, in order to make the discussion self-contained.
description: 54 pages, 3 figures
title: Ekonomika zagospodarowania przestrzennego z uwzględnieniem oszczędności energii na przykładzie poznańskiego obszaru metropolitalnego
Creators: name: Skórzewski, Wojciech
Publisher: name: Publishing House of Poznan University of Technology
Year: 2021

description: Zeszyty Naukowe Politechniki Poznańskiej. Architektura, Urbanistyka, Architektura wnętrz, 5, 17-27
QCD thermodynamics at zero and non-zero density
Creators: name: Schmidt, Christian
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present recent results on thermodynamics of QCD with almost physical light quark masses and a physical strange quark mass value. These calculations have been performed with an improved staggerd action especially designed for finite temperature lattice QCD. In detail we present a calculation of the transition temperature, using a combined chiral and continuum extrapolation. Furthermore we present preliminary results on the interaction measure and energy density at almost realistic quark masses. Finally we disscuss the response of the pressure to a finite quark chemical potential. Within the Taylor expansion formalism we calculate quark number susceptibilities and leading order corrections to finite chemical potential. This is particularly usefull for mapping out the critical region in the QCD phase diagram.
description: Invited talk at 3rd International Workshop on Critical Point and Onset of Deconfinement, Florence, Italy, 3-6 Jul 2006
title: "Political Scientists" - "Scientific Politicians"?
Creators: name: Wild, Lena
Year: 2022

description: Gegenstand der Arbeit ist eine Untersuchung des Verhältnisses von „Theorie“ und „Praxis“ in Ciceros staatstheoretischem Werk De re publica, wobei die in Anführungszeichen gesetzten Leittermini als übergreifende Stellvertreterbegriffe für die folgenden drei spezifischen Gegensatzpaare innerhalb dieses Verhältnisses dienen: (i) otium – vita contemplativa / negotium – vita activa, weiters (ii) Wissenschaft als theoretische Basis – Erkennen des Kosmos als Ziel / Regieren als praktische Anforderung – Imitation des Kosmos als Aufgabe, sowie schließlich (iii) Transzendenz – Gott – Nichtigkeit des Daseins und des Ruhms / Immanenz – Staat – Wichtigkeit des Staatsdienstes. Das Nachzeichnen dieses ‚roten Fadens‘ entlang des zu nicht unwesentlichen Teilen fragmentarischen Werks zeigt auf, wie Cicero durch den Mund verschiedener Sprecher mit viel Fingerspitzengefühl das Verhältnis von „Theorie“ und „Praxis“ im Werkverlauf entwickelt, um seine implizite Leserschaft – wie philosophie- beziehungsweise „theorie“-affin diese letztlich auch sein mochte – vom Ideal einer fein austarierten Interdependenz von theoretischen Kenntnissen und praktischer, insbesondere politischer Handlungsverantwortung zu überzeugen. Zentrale Bedeutung innerhalb dieses Verhältnisses kommen hierbei der Einschränkung des positiv konnotierten otium auf eine temporäre Auszeit sowie dem Konzept der Imitation, welche die philosophisch-theoretische Sphäre an die politische rückbindet, zu. Des Weiteren konnte gezeigt werden, wie das Somnium Scipionis als Schlusspart von De re publica in allen drei Gegensatzpaaren wesentliche Einflüsse auf das Verhältnis von „Theorie“ und „Praxis“ ausübt, indem es die offenen Stränge aus den vorherigen Büchern aus dieser Interdependenz heraus verknüpft und dabei rückwirkend Schlüsselkonzepte – etwa das der docti homines – zum Erfassen der „theoretischen“ Seite im restlichen Werk ergänzt.
Intrinsic noise properties of atomic point contact displacement detectors
Creators: name: Flowers-Jacobs, N. E.
name: Schmidt, D. R.
name: Lehnert, K. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We measure the noise added by an atomic point contact operated as a displacement detector. With a microwave technique, we increase the measurement speed of atomic point contacts by a factor of 500. The measurement is then fast enough to detect the resonant motion of a nanomechanical beam at frequencies up to 60 MHz and sensitive enough to observe the random thermal motion of the beam at 250 mK. We demonstrate a shot-noise limited imprecision of $2.3\pm0.1\ \mathrm{fm/\sqrt{Hz}}$ and observe a $78\pm20 \mathrm{aN/\sqrt{Hz}}$ backaction force, yielding a total uncertainty in the beam's displacement that is $42\pm9$ times the standard quantum limit.
description: 5 pages, 4 figures, to appear in Physical Review Letters
Affleck-Dine baryogenesis in anomaly-mediated SUSY breaking
Creators: name: Kawasaki, Masahiro
name: Nakayama, Kazunori
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It has been known that in anomaly-mediated SUSY breaking model Affleck-Dine baryogenesis does not work due to trapping of Affleck-Dine field into charge-breaking minima. We show that when finite-temperature effect is properly taken into account and if reheating temperature is relatively high, the problem of falling into charge breaking global minima can be avoided and hence Affleck-Dine baryogenesis works. Moreover, for the LH_u flat direction we obtain a constraint on the mass of neutrino.
description: 17 pages, 4 figures; Minor corrections, added a reference
Solid tidal friction in multi-layer planets: Application to Earth, Venus, a Super Earth and the TRAPPIST-1 planets. Can a multi-layer planet be approximated as a homogeneous planet?
Creators: name: Bolmont, Emeline
name: Breton, Sylvain N.
name: Tobie, Gabriel
name: Dumoulin, Caroline
name: Mathis, Stéphane
name: Grasset, Olivier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: With the discovery of TRAPPIST-1 and its seven planets within 0.06 au, the correct treatment of tidal interactions is becoming necessary. The eccentricity, rotation, and obliquity of the planets of TRAPPIST-1 are indeed the result of tidal evolution over the lifetime of the system. Tidal interactions can also lead to tidal heating in the interior of the planets, which can then be responsible for volcanism and/or surface deformation. In the majority of studies to estimate the rotation of close-in planets or their tidal heating, the planets are considered as homogeneous bodies and their rheology is often taken to be a Maxwell rheology. We investigate here the impact of considering a multi-layer structure and an Andrade rheology on the way planets dissipate tidal energy as a function of the excitation frequency. We use an internal structure model, which provides the radial profile of structural and rheological quantities to compute the tidal response of multi-layer bodies. We then compare the outcome to the dissipation of a homogeneous planet. We find that for purely rocky bodies, it is possible to approximate the response of a multi-layer planet by that of a homogeneous planet. However, using average profiles of shear modulus and viscosity to compute the homogeneous planet response leads to an overestimation of the averaged dissipation. We provide fitted values of shear modulus and viscosity to be able to reproduce the response of various types of rocky planets. However, we find that if the planet has an icy layer, its tidal response can no longer be approximated by a homogeneous body because of the very different properties of the icy layers, which lead to a second dissipation peak at higher frequencies. We also compute the tidal heating profiles for the outer TRAPPIST-1 planets (e to h).
description: Accepted in A&A. The abstract was modified to fit in
Hybrid brane worlds in the Salam-Sezgin model
Creators: name: Carter, Benedict M. N.
name: Nielsen, Alex B.
name: Wiltshire, David L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct a 6-dimensional warped brane world compactification of the Salam-Sezgin supergravity model by generalizing an earlier hybrid Kaluza-Klein / Randall-Sundrum construction [hep-th/0109099]. In this construction the observed universe is interpreted as a 4-brane in six dimensions, with a Kaluza-Klein spatial direction in addition to the usual three noncompact spatial dimensions. This construction is distinct from other brane world constructions in six dimensions, which introduce the universe as a 3-brane corresponding to a topological defect in six dimensions, or which require a particular configuration of matter fields on the brane. We demonstrate that the model reproduces localized gravity on the brane in the expected form of a Newtonian potential with Yukawa-type corrections. We show that allowed parameter ranges include values which potentially solve the hierarchy problem. An exact nonlinear gravitational wave solution on the background is exhibited. The class of solutions given applies to Ricci-flat geometries in four dimensions, and consequently includes brane world realizations of the Schwarzschild and Kerr black holes as particular examples. Arguments are given which suggest that the hybrid compactification of the Salam-Sezgin model can be extended to reductions to arbitrary Einstein space geometries in four dimensions.
description: 27 pages, 2 figures, JHEP3.cls; v3 small additional sub-section consistent with published version
Trusted-HB: a low-cost version of HB+ secure against Man-in-The-Middle attacks
Creators: name: Bringer, Julien
name: Chabanne, Herve
Publisher: name: arXiv
Year: 2008
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Since the introduction at Crypto'05 by Juels and Weis of the protocol HB+, a lightweight protocol secure against active attacks but only in a detection based-model, many works have tried to enhance its security. We propose here a new approach to achieve resistance against Man-in-The-Middle attacks. Our requirements - in terms of extra communications and hardware - are surprisingly low.
description: submitted to IEEE Transactions on Information Theory
Aspects of reactive moderately dense gas quantum kinetic theory
Creators: name: Wei, Guowei
Publisher: name: University of British Columbia
Year: 2009

description: This thesis consists of three parts. In Part I, a two-Liouville space theory of reactive gases is formulated in an effort to understand and by-pass the strong orthogonality approximation standardly used in reactive gas kinetic theories. The formulation is based on a two-Liouville space scattering formalism developed in this thesis. The present work follows an approach very similar to the presentation by Lowry and Snider (J. Chem. Phys. 61, 2320 (1974)). Kinetic equations for arbitrary bound clusters are derived within the structure of the two-Liouville space scattering theory. Bound clusters for an arbitrary number of particles are systematically treated in the present work and defined as the asymptotic bound fragments in the N-particle asymptotic Liouville space. A method of closure, which is quite different from the conventional BBGKY procedure, is introduced to yield a compact set of kinetic equations for the clusters. A comparison with the Lowry-Snider theory is given. In Part II, a Hilbert-Schmidt representation of Ursell operators is given. It is found that the connected quantum Ursell operators are closely related to the Hilbert-Schmidt kernel of Faddeev (for three particles), and its generalization to the description of the collision of an arbitrary number of particles. This important feature permits the formulation of a general Hilbert-Schmidt representation of Ursell operators by expressing the latter in terms of Hilbert- Schmidt kernels. As a consequence, it is seen how the virial coefficients can be evaluated using Hilbert-Schmidt expansions. In particular, second virial coefficient is explicitly expressed in terms of the Hilbert-Schmidt expansion of the resolvent operator. Square integrable states associated with the resonance poles have been found of use in carrying out this expansion. The method depends on distinguishing between the functional analysis properties of the resolvent operator and the analytic function properties of its matrix elements. In Part III, a renormalized quantum Boltzmann equation (R. F. Snider, J. Stat. Phys. 61, 443 (1990)) has been generalized to include the presence of bound states. This has involved the introduction of three coupled equations, one each for the renormalized particle, the bound pair and the unbound pair correlations. The latter is responsible, at equilibrium, for the unbound part of the second virial coefficient. Chapman Enskog solutions to this set of equations are obtained in two schemes. One for moderately dense gas in which there are no bound states, the other in the presence of bound states. The Wigner representation for quantum mechanical operators are used throughout to separate the macroscopic and microscopic properties of the state of system. The resulting expressions for the transport coefficients in the first scheme have contributions arising from particles that are free and from pair correlations. In the second, there are also contributions from the bound pairs.
Ο Αναστάσιος Ραψανιώτης. Βίος και έργο.:
Creators: name: Σαΐτης, Κωνσταντίνος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Ραψανιώτης Αναστάσιος
Πολυέλεος
Anastasios Rapsaniotis
Polyeleos

description: Σκοπός της διατριβής ήταν η μελέτη της προσωπικότητας και η ανάδειξη του υμνογραφικού έργου του Αναστασίου Ραψανιώτη, πρωτοψάλτου Λαρίσης. Εξετάσαμε αρχικά την εκκλησιαστική ιστορία της μητροπόλεως Λαρίσης, πόλη που έζησε και έδρασε ο Ραψανιώτης, μέχρι τα τέλη του 18ου αιώνα όπου και τοποθετείται το τέλος της δράσης του. Ο 18ος αιώνας, ο αιώνας του Διαφωτισμού ανέδειξε εκτός από τον Ραψανιώτη πολλές προσωπικότητες τόσο στον χώρο των γραμμάτων όσο και της ψαλτικής τέχνης στη Λάρισα και γενικά στο χώρο της Θεσσαλίας. Στη συνέχεια ακολουθεί ο βίος του Αναστασίου Ραψανιώτη, όπου εκεί αποκαλύπτουμε το πραγματικό επίθετο του και ακολουθεί κατάλογος χειρογράφων με τα έργα του. Να επισημανθεί ότι ο Ραψανιώτης θεωρείται από τους πολυγραφότερους μελουργούς της ψαλτικής τέχνης με συνθέσεις σε όλα τα είδη της βυζαντινής μελοποιίας. Τέλος ακολουθεί μια αναδρομική και συγκριτική ανάλυση του πολυελέου Δούλοι Κύριον σε ήχο δ΄ λέγετο του Αναστασίου Ραψανιώτη από τον χειρόγραφο κώδικα Καρακάλλου 216 του ΙΘ΄ αιώνα (1819), με τον μεταγενέστερο πολυέλεο Εξομολογείσθε τω Κυρίω του Θεοδώρου Φωκαέως σε ήχο πάλι δ΄ λέγετο, επισημαίνοντας τις επιρροές του πρώτου στον δεύτερο, στους κοινούς στίχους που υπάρχουν μεταξύ των δυο ομόηχων πολυελέων.
description: The aim of the thesis was the study of personality and enhancement of hymnography work of Rapsaniotis Anastasios, Cantor of Larissa. First examine the ecclesiastical history of metropolis of Larissa, the town that lived and acted Rapsaniotis until the late 18th century, where we placed the end of his action. The 18th century, the century of the Enlightenment except Rapsaniotis, highlighted many personalities both in the field of literature and art of Chanting in Larissa and generally in the field of Thessaly. Then follows the biography of Anastasios Rapsaniotis, where we uncover his real last name, followed by the list of manuscripts of his works. Be noted that Rapsaniotis considered one of the most prolific melourgous in psaltic art with compositions in all kinds of Byzantine composer. Finally follows a retrospective and comparative analysis of polyeleos Douloi Kyrion in fourth mode legetos, by Anastasios Rapsaniotis from the manuscript code of Karakallou 216 (19th Century, 1819), with the later polyeleos Confess to the Lord of Theodore Phokaeus in fourth mode legetos too, noting the influences of the first to the second polyeleos, in the common verses that there are between them.
Block orthogonal polynomials: I. Definition and properties
Creators: name: Normand, Jean-Marie
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 11C08; 15A03; 15A63; 33C45; 33D45; 42C05

description: Constrained orthogonal polynomials have been recently introduced in the study of the Hohenberg-Kohn functional to provide basis functions satisfying particle number conservation for an expansion of the particle density. More generally, we define block orthogonal (BO) polynomials which are orthogonal, with respect to a first Euclidean scalar product, to a given $i$-dimensional subspace ${\cal E}_i$ of polynomials associated with the constraints. In addition, they are mutually orthogonal with respect to a second Euclidean scalar product. We recast the determination of these polynomials into a general problem of finding particular orthogonal bases in an Euclidean vector space endowed with distinct scalar products. An explicit two step Gram-Schmidt orthogonalization (G-SO) procedure to determine these bases is given. By definition, the standard block orthogonal (SBO) polynomials are associated with a choice of ${\cal E}_i$ equal to the subspace of polynomials of degree less than $i$. We investigate their properties, emphasizing similarities to and differences from the standard orthogonal polynomials. Applications to classical orthogonal polynomials will be given in forthcoming papers.
description: This is a reduced version of the initial manuscript, the number of pages being reduced from 34 to 26