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Starting from the Liouville equation, we derive the exact hierarchy of equations satisfied by the reduced distribution functions of the single species point vortex gas in two dimensions. Considering an expansion of the solution in powers of…

统计力学 · 物理学 2009-11-13 P. H. Chavanis

In paper I of this series on fluid turbulence we showed that exact resummations of the perturbative theory of the structure functions of velocity differences result in a finite (order by order) theory. These findings exclude any known…

chao-dyn · 物理学 2009-10-28 Victor L'vov , Itamar Procaccia

We consider relative equilibrium solutions of the two-dimensional Euler equations in which the vorticity is concentrated on a union of finite-length vortex sheets. Using methods of complex analysis, more specifically the theory of the…

流体动力学 · 物理学 2020-03-12 Bartosz Protas , Takashi Sakajo

Using two innovations, smooth, but distinctly different, scaling laws for the numerical reconnection of pairs of initially orthogonal and anti-parallel quantum vortices are obtained using the three-dimensional Gross-Pitaevskii equations,…

量子气体 · 物理学 2016-02-18 Cecilia Rorai , Jack Skipper , Robert M. Kerr , Katepalli R. Sreenivasan

We present a methodology that extends invariant manifold theory to a class of autonomous piecewise linear systems with nonsmoothness at the equilibrium, providing a framework for model order reduction in mechanical structures with compliant…

动力系统 · 数学 2026-01-16 A. Yassine Karoui , Remco I. Leine

We are concerned with the vortex sheet solutions for the inviscid two-phase flow in two dimensions. In particular, the nonlinear stability and existence of compressible vortex sheet solutions under small perturbations are established by…

偏微分方程分析 · 数学 2020-01-03 Feimin Huang , Dehua Wang , Difan Yuan

We study the vortex lines that are a feature of many random or disordered three-dimensional systems. These show universal statistical properties on long length scales, and geometrical phase transitions analogous to percolation transitions…

统计力学 · 物理学 2012-05-03 Adam Nahum , J. T. Chalker

We propose a kinetic framework for single-component non-ideal isothermal flows. Starting from a kinetic model for a non-ideal fluid, we show that under conventional scaling the Navier-Stokes equations with a non-ideal equation of state are…

流体动力学 · 物理学 2022-12-14 S. A. Hosseini , B. Dorschner , I. V. Karlin

We generalize Kirchhoff's point vortex model of two-dimensional fluid motion to a rotor model which exhibits an inverse cascade by the formation of rotor clusters. A rotor is composed of two vortices with like-signed circulations glued…

统计力学 · 物理学 2013-11-27 Jan Friedrich , Rudolf Friedrich

A numerical method to calculate equilibrium vortex-line configurations in bulk anisotropic type-II superconductors, at zero temperature, placed in an external magnetic field is introduced and applied to two physical problems. The method is…

超导电性 · 物理学 2009-10-31 Welles A. M. Morgado , Gilson Carneiro

A nonlocal quantum gravity theory is presented which is finite and unitary to all orders of perturbation theory. Vertex form factors in Feynman diagrams involving gravitons suppress graviton and matter vacuum fluctuation loops by…

高能物理 - 理论 · 物理学 2007-05-23 J. W. Moffat

The obstruction for application of effective techniques like denominator reduction for the computation of the $c_2$ invariant of Feynman graphs in general is the absence of a 3-valent vertex for the initial steps. In this paper such a…

代数几何 · 数学 2017-04-05 Dmitry Doryn

Taking the competition and the mutual screening of various bosonic fluctuations in correlated electron systems into account requires an unbiased approach to the many-body problem. One such approach is the self-consistent solution of the…

强关联电子 · 物理学 2020-01-01 Friedrich Krien , Angelo Valli

We consider a version of the symmetric Anderson impurity model (compactified) which has a non-Fermi liquid weak coupling regime. We find that in the Majorana fermion representation, perturbation theory can be conveniently developed in terms…

凝聚态物理 · 物理学 2009-10-28 Guang-Ming Zhang , A. C. Hewson

In this paper a fluid-structure interaction problem for the incompressible Newtonian fluid is studied. We prove the convergence of an iterative process with respect to the computational domain geometry. In our previous works on numerical…

偏微分方程分析 · 数学 2022-04-11 Anna Hundertmark

We address the problem of finding self-consistent parquet equations for two-body correlated Greens functions that arise out of a cumulant expansion. The general theory as developed for non-relativistic electron systems reproduces the…

统计力学 · 物理学 2014-11-20 P. Kleinert

In this paper, we study the three-dimensional non-isentropic compressible fluid-particle flows. The system involves coupling between the Vlasov-Fokker-Planck equation and the non-isentropic compressible Navier-Stokes equations through…

偏微分方程分析 · 数学 2019-04-18 Yanmin Mu , Dehua Wang

We continue the study of Confined Vortex Surfaces (\CVS{}) that we introduced in the previous paper. We classify the solutions of the \CVS{} equation and find the analytical formula for the velocity field for arbitrary background strain…

流体动力学 · 物理学 2022-03-14 Alexander Migdal

We present an iterative method for generating the complete set of self-energy Feynman diagrams at arbitrary order for the single-polaron problem with arbitrary linear coupling to the lattice. The approach combines a combinatorial…

强关联电子 · 物理学 2026-05-06 Tomislav Miškić , Juraj Krsnik , Stefano Ragni , Andrey S. Mishchenko , Osor S. Barišić

Point-vortex dynamics describe idealized, non-smooth solutions to the incompressible Euler equations on 2-dimensional manifolds. Integrability results for few point-vortices on various domains is a vivid topic, with many results and…

数学物理 · 物理学 2024-01-25 Klas Modin , Milo Viviani