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Hyperuniform systems are distinguished by an unusually strong suppression of large-scale density fluctuations and, consequently, display a high degree of uniformity at the largest length scales. In some cases, however, enhanced uniformity…

统计力学 · 物理学 2025-10-24 Carlo Vanoni , Paul J. Steinhardt , Salvatore Torquato

We investigate the renormalization group flows of multicomponent scalar theories with $U(1)$ gauge symmetry using the functional renormalization group method. The scalar sector is built up from traces of matrix fields that belong to simple,…

高能物理 - 唯象学 · 物理学 2019-08-28 G. Fejos , T. Hatsuda

We consider dimensional crossover for an $O(N)$ Landau-Ginzburg-Wilson model on a $d$-dimensional film geometry of thickness $L$ in the large $N$-limit. We calculate the full universal crossover scaling forms for the free energy and the…

凝聚态物理 · 物理学 2009-10-28 Denjoe O'Connor , C. R. Stephens , A. J. Bray

We extend the well-known Shannon decomposition of Boolean functions to more general classes of functions. Such decompositions, which we call pivotal decompositions, express the fact that every unary section of a function only depends upon…

环与代数 · 数学 2014-06-10 Jean-Luc Marichal , Bruno Teheux

Phase separation in binary and ternary fluids is studied using a two dimensional Lattice Gas Automata. The lengths, given by the the first zero crossing point of the correlation function and the total interface length is shown to exhibit…

软凝聚态物质 · 物理学 2009-11-07 K. C. Lakshmi , P. B. Sunil Kumar

We study a class of one-dimensional classical fluids with penetrable particles interacting through positive, purely repulsive, pair-potentials. Starting from some lower bounds to the total potential energy, we draw results on the…

统计力学 · 物理学 2017-02-28 Riccardo Fantoni

We handle divergent {\epsilon} expansions in different universality classes derived from modified Landau-Wilson Hamiltonian. Landau-Wilson Hamiltonian can cater for describing critical phenomena on a wide range of physical systems which…

统计力学 · 物理学 2021-09-24 Venkat Abhignan , R. Sankaranarayanan

This paper collects the efforts done in our previous works [P. Degond, S. Jin, L. Mieussens, A Smooth Transition Between Kinetic and Hydrodynamic Equations, J. Comp. Phys., 209 (2005) 665--694.],[P.Degond, G. Dimarco, L. Mieussens, A Moving…

数学物理 · 物理学 2014-04-08 Pierre Degond , Giacomo Dimarco , Luc Mieussens

A unified framework for coupled Navier-Stokes/Cahn-Hilliard equations is developed using, as a basis, a balance law for microforces in conjunction with constitutive equations consistent with a mechanical version of the second law. As a…

patt-sol · 物理学 2025-02-25 Morton E. Gurtin , Debra Polignone , Jorge Vinals

We establish new scaling properties for the universality class of Model C, which describes relaxational critical dynamics of a nonconserved order parameter coupled to a conserved scalar density. We find an anomalous diffusion phase, which…

统计力学 · 物理学 2013-11-05 David Mesterházy , Jan H. Stockemer , Leticia F. Palhares , Jürgen Berges

We consider the Cauchy problem for incompressible viscoelastic fluids in the whole space $\mathbb{R}^d$ ($d=2,3$). By introducing a new decomposition via Helmholtz's projections, we first provide an alternative proof on the existence of…

偏微分方程分析 · 数学 2023-07-28 Xianpeng Hu , Hao Wu

Scaling of the Reynolds stresses has been sought by many researchers, since it provides a template of universal dynamical patterns across a range of Reynolds numbers. Various statistical and normalization schemes have been attempted, but…

流体动力学 · 物理学 2024-07-18 T. -W. Lee , J. E. Park

Disordered viscoelastic materials are ubiquitous and exhibit fascinating invariant scaling properties. In a companion article, we have presented comprehensive new results for the critical behavior of the dynamic susceptibility of disordered…

软凝聚态物质 · 物理学 2022-03-01 Danilo B. Liarte , Stephen J. Thornton , Eric Schwen , Itai Cohen , Debanjan Chowdhury , James P. Sethna

We study the global existence of a unique strong solution and its large-time behavior of a two-phase fluid system consisting of the compressible isothermal Euler equations coupled with compressible isentropic Navier-Stokes equations through…

偏微分方程分析 · 数学 2016-07-04 Young-Pil Choi

We present a general framework for understanding and analyzing critical behaviour in gravitational collapse. We adopt the method of renormalization group, which has the following advantages. (1) It provides a natural explanation for various…

广义相对论与量子宇宙学 · 物理学 2016-08-31 Takashi Hara , Tatsuhiko Koike , Satoshi Adachi

We study the renormalization group flow of the O(N) non-linear sigma model in arbitrary dimensions. The effective action of the model is truncated to fourth order in the derivative expansion and the flow is obtained by combining the…

高能物理 - 理论 · 物理学 2013-05-16 Raphael Flore , Andreas Wipf , Omar Zanusso

We present a new multidimensional classical hydrodynamics code based on Semidiscrete Central Godunov-type schemes and high order Weighted Essentially Non-oscillatory (WENO) data reconstruction. This approach is a lot simpler and easier to…

天体物理学 · 物理学 2007-05-23 Tanvir Rahman , R. B. Moore

A non-perturbative Renormalization Group approach is used to calculate scaling functions for an O(4) model in d=3 dimensions in the presence of an external symmetry-breaking field. These scaling functions are important for the analysis of…

高能物理 - 理论 · 物理学 2008-11-26 Jens Braun , Bertram Klein

We present a general hydrodynamic theory for active fluids, capable of describing living matter, that conserve center of mass or dipole moment. Imposition of dipole or center-of-mass conservation has been reported to yield peculiar…

软凝聚态物质 · 物理学 2026-02-25 Anish Chaudhuri , Lokrshi Prawar Dadhichi , Arijit Haldar

Normalizing flows are a promising tool for modeling probability distributions in physical systems. While state-of-the-art flows accurately approximate distributions and energies, applications in physics additionally require smooth energies…

机器学习 · 统计学 2021-12-01 Jonas Köhler , Andreas Krämer , Frank Noé