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For classical Brownian systems driven out of equilibrium we derive inhomogeneous two-time correlation functions from functional differentiation of the one-body density and current with respect to external fields. In order to allow for…

软凝聚态物质 · 物理学 2014-01-21 Joseph M. Brader , Matthias Schmidt

Liouville conformal field theory is a prototypical example of an exactly solvable quantum field theory, in the sense that the correlation functions in an arbitrary background can be determined exactly using only the constraints of unitarity…

高能物理 - 理论 · 物理学 2024-11-19 Nathan Benjamin , Scott Collier , Alexander Maloney , Viraj Meruliya

We provide a rigorous derivation of the Boltzmann equation as the mesoscopic limit of systems of hard spheres, or Newtonian particles interacting via a short-range potential, as the number of particles $N$ goes to infinity and the…

偏微分方程分析 · 数学 2015-03-20 Isabelle Gallagher , Laure Saint-Raymond , Benjamin Texier

Interface dynamics in two-dimensional systems with a maximal number of conservation laws gives an accurate theoretical model for many physical processes, from the hydrodynamics of immiscible, viscous flows (zero surface-tension limit of…

数学物理 · 物理学 2008-07-17 Ferenc Balogh , Razvan Teodorescu

We study, using Monte Carlo simulations, the cavity and the bridge functions of various hard sphere fluids: one component system, equimolar additive and non additive binary mixtures. In particular, we numerically check the assumption of…

统计力学 · 物理学 2007-05-23 R. Fantoni , G. Pastore

We study nonequilibrium evolution in a self-interacting quantum field theory invariant under space translation only by using a canonical approach based on the recently developed Liouville-von Neumann formalism. The method is first used to…

高能物理 - 唯象学 · 物理学 2009-11-10 Supratim Sengupta , F. C. Khanna , Sang Pyo Kim

Given a fine-scale physical theory characterized by an evolutionary system of equations and a set of quantities, defined from the variables of the fine theory, that serve as a coarse representation of the fine scale phenomena, a systematic…

统计力学 · 物理学 2007-05-23 Amit Acharya

The objective of the work summarised here has been to exploit and extend ideas from plasma physics and accelerator dynamics to formulate a unified description of collisionless relaxation that views violent relaxation, Landau damping, and…

天体物理学 · 物理学 2007-05-23 Henry E. Kandrup

Correlation functions in Liouville theory are meromorphic functions of the Liouville momenta, as is shown explicitly by the DOZZ formula for the three-point function on the sphere. In a certain physical region, where a real classical…

高能物理 - 理论 · 物理学 2017-02-21 Daniel Harlow , Jonathan Maltz , Edward Witten

I set the stage for discussion of the stellar populations in interacting galaxies by looking back over the slow development of our understanding of these systems. From early anecdotal collections, to systematic cataloging, and finally to…

宇宙学与河外天体物理 · 物理学 2009-08-13 William C. Keel

The main result of this paper is a proof of the continuity of a family of integral functionals defined on the space of functions of bounded variation with respect to a topology under which smooth functions are dense. These functionals occur…

偏微分方程分析 · 数学 2014-11-24 Filip Rindler , Giles Shaw

Dynamical linked cluster expansions are linked cluster expansions with hopping parameter terms endowed with their own dynamics. This amounts to a generalization from 2-point to point-link-point interactions. We develop an associated graph…

高能物理 - 格点 · 物理学 2009-10-31 H. Meyer-Ortmanns , T. Reisz

This paper is devoted to the problem of the description of nonequilibrium correlations in quantum many-particle systems. The nonlinear quantum BBGKY hierarchy for marginal correlation operators is rigorously derived from the von Neumann…

数学物理 · 物理学 2013-11-14 V. I. Gerasimenko , D. O. Polishchuk

To develop a dislocation-based statistical continuum theory of crystal plasticity is a major challenge of materials science.During the last two decades such a theory has been developed for the time evolution of a system of parallel edge…

材料科学 · 物理学 2021-05-12 István Groma , Péter Dusán Ispánovity , Thomas Hochrainer

We studied the evolution of the gas kinematics of galaxies by performing hydrodynamical simulations in a cosmological scenario. We paid special attention to the origin of the scatter of the Tully-Fisher relation and the features which could…

宇宙学与河外天体物理 · 物理学 2013-06-12 Maria E. De Rossi , Susana E. Pedrosa

Studying coupling between different galactic components is a challenging problem in galactic dynamics. Using basis function expansions (BFEs) and multichannel singular spectrum analysis (mSSA) as a means of dynamical data mining, we…

星系天体物理 · 物理学 2023-02-22 Alexander Johnson , Michael S. Petersen , Kathryn V. Johnston , Martin D. Weinberg

We outline a new method of construction of global-in-time weak solutions of the Liouville equation - and also of the associated BBGKY hierarchy - corresponding to the hard sphere singular Hamiltonian. Our method makes use only of geometric…

偏微分方程分析 · 数学 2018-07-04 Mark Wilkinson

We investigate expansions for connectedness functions in the random connection model of continuum percolation in powers of the intensity. Precisely, we study the pair-connectedness and the direct-connectedness functions, related to each…

数学物理 · 物理学 2022-09-09 Sabine Jansen , Leonid Kolesnikov , Kilian Matzke

The Stochastic Loewner evolution is a recent tool in the study of two-dimensional critical systems. We extend this approach to the case of critical systems with continuous symmetries, such as SU(2) Wess-Zumino-Witten models, where domain…

高能物理 - 理论 · 物理学 2007-05-23 E. Bettelheim , I. A. Gruzberg , A. W. W. Ludwig , P. Wiegmann

Boltzmann's equation provides a microscopic model for the evolution of dilute classical gases. A fundamental problem in mathematical physics is to rigorously derive Boltzmann's equation starting from Newton's laws. In the 1970s, Oscar…

偏微分方程分析 · 数学 2017-07-03 Ryan Denlinger