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Consider the scattering of a time-harmonic elastic plane wave by a periodic rigid surface. The elastic wave propagation is governed by the two-dimensional Navier equation. Based on a Dirichlet-to-Neumann (DtN) map, a transparent boundary…

数值分析 · 数学 2020-02-19 Peijun Li , Xiaokai Yuan

It is shown how to derive simple polynomial expressions for the variational configurational entropy starting from the cluster variation method (CVM). As an example, first six terms of the expansion of the entropy in powers of the…

统计力学 · 物理学 2007-05-23 Igor Tsatskis

We performed extensive molecular dynamics (MD) simulations, supplemented by Mode Coupling Theory (MCT) calculations, for the Square Shoulder (SS) model, a purely repulsive potential where the hard-core is complemented by a finite shoulder.…

软凝聚态物质 · 物理学 2015-06-15 Gayatri Das , Nicoletta Gnan , Francesco Sciortino , Emanuela Zaccarelli

We present an energy/entropy stable and high order accurate finite difference (FD) method for solving the nonlinear (rotating) shallow water equations (SWEs) in vector invariant form using the newly developed dual-pairing and…

We use an information-theoretic measure of shape complexity known as configurational entropy (CE) to investigate numerically the remarkably long lifetimes of spherically-symmetric ``resonant oscillons'' in three-dimensional and of…

高能物理 - 理论 · 物理学 2020-05-20 Marcelo Gleiser , Max Krackow

We present an explicit method for simulating stochastic differential equations (SDEs) that have variable diffusion coefficients and satisfy the detailed balance condition with respect to a known equilibrium density. In Tupper and Yang…

数值分析 · 数学 2014-06-27 Paul Tupper , Xin Yang

Boltzmann-Sanov and Cramer-Chernoff's theorems provide large deviation probabilities, entropy, and rate functions for the spatial distribution of systems and the total internal energy of an ensemble respectively. By the method of Lagrange's…

统计力学 · 物理学 2021-09-17 D. P. Shinde

We determine the universal part of pseudoentropy for small shape deformations of spherical entangling surfaces in the context of de Sitter/conformal field theory (dS/CFT) correspondence. The leading correction at quadratic order in the…

高能物理 - 理论 · 物理学 2025-12-03 Giorgos Anastasiou , Ignacio J. Araya , Avijit Das , Javier Moreno

A quasi-entropy is constructed for tensors averaged by a density function on $SO(3)$ using the log-determinant of a covariance matrix. It serves as a substitution of the entropy for tensors derived from a constrained minimization that…

数学物理 · 物理学 2022-11-09 Jie Xu

We consider the meta-equilibrium state of a composite system made up of independent subsystems satisfying the additive form of external constraints, as recently discussed by Abe [Phys. Rev. E {\bf 63}, 061105 (2001)]. We derive the additive…

统计力学 · 物理学 2009-11-10 Ramandeep S. Johal

In a remarkable study by M. Gleiser and N. Jiang [Phys. Rev. D {\bf 92}, 044046, 2015], the authors demonstrated that the stability regions of neutron stars, within the framework of the simple Fermi gas model, and self-gravitating…

广义相对论与量子宇宙学 · 物理学 2024-12-03 P. S. Koliogiannis , M. Vikiaris , C. Panos , V. Petousis , M. Veselsky , Ch. C. Moustakidis

Compressible multiphase and multicomponent solvers require accurate interface representation without spurious pressure oscillations. At material interfaces, pressure and velocity are continuous while density and the equation of state…

流体动力学 · 物理学 2026-04-23 Amareshwara Sainadh Chamarthi

We explore the application of generating symmetries, i.e. symmetries that depend on a parameter, to integrable hyperbolic third order equations, and in particular to consistent pairs of such equations as introduced by Adler and Shabat (AS).…

可精确求解与可积系统 · 物理学 2023-11-30 Alexander G. Rasin , Jeremy Schiff

We give a new and rigorous duality relation between two central notions of weak solutions of nonlinear PDEs: entropy and viscosity solutions. It takes the form of the nonlinear dual inequality: \begin{equation}\int |S_t u_0-S_t v_0|…

偏微分方程分析 · 数学 2024-04-17 Nathaël Alibaud , Jørgen Endal , Espen Robstad Jakobsen

This paper develops and analyzes a fully discrete finite element method for a class of semilinear stochastic partial differential equations (SPDEs) with multiplicative noise. The nonlinearity in the diffusion term of the SPDEs is assumed to…

数值分析 · 数学 2018-11-22 Xiaobing Feng , Yukun Li , Yi Zhang

The residual multiparticle entropy (RMPE) of a fluid is defined as the difference, $\Delta s$, between the excess entropy per particle (relative to an ideal gas with the same temperature and density), $s_\text{ex}$, and the pair-correlation…

软凝聚态物质 · 物理学 2018-07-26 Andrés Santos , Franz Saija , Paolo V. Giaquinta

Patchy particles are a popular paradigm for the design and synthesis of nanoparticles and colloids for self-assembly. In "traditional" patchy particles, anisotropic interactions arising from patterned coatings, functionalized molecules,…

软凝聚态物质 · 物理学 2014-02-18 Greg van Anders , N. Khalid Ahmed , Ross Smith , Michael Engel , Sharon C. Glotzer

The excess entropy, Se, defined as the difference between the entropies of the liquid and the ideal gas under identical density and temperature conditions, is shown to be the critical quantity connecting the structural, diffusional and…

软凝聚态物质 · 物理学 2009-11-11 Ruchi Sharma , Somendra Nath Chakraborty , Charusita Chakravarty

Second-order dissipative hydrodynamic equations for each component of a multi-component system are derived using the entropy principle. The shear viscosity of the whole system, appearing in the equation summed-up over all components, is…

高能物理 - 唯象学 · 物理学 2011-03-24 Andrej El , Ioannis Bouras , Francesco Lauciello , Zhe Xu , Carsten Greiner

Most discussions of chaotic scattering systems are devoted to two-dimensional systems. It is of considerable interest to extend these studies to the, in general, more realistic case of three dimensions. In this context, it is conceptually…

chao-dyn · 物理学 2008-02-03 Michael Henseler , Andreas Wirzba , Thomas Guhr