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Symmetric and antisymmetric terms have been obtained in the framework of the variational approach for two-dimensional (2D) Coulomb systems of symmetric trions XXY. Stability diagrams and certain anomalies arising in the 2D space are…

量子物理 · 物理学 2016-08-05 I. V. Simenog , V. V. Mikhnyuk , Y. M. Bidasyuk

We consider Smoluchowski's coagulation equation in the case of the diagonal kernel with homogeneity $\gamma>1$. In this case the phenomenon of gelation occurs and solutions lose mass at some finite time. The problem of the existence of…

偏微分方程分析 · 数学 2018-12-14 Marco Bonacini , Barbara Niethammer , Juan Velázquez

Reciprocal space methods for solving Poisson's equation for finite charge distributions are investigated. Improvements to previous proposals are presented, and their performance is compared in the context of a real-space density functional…

计算物理 · 物理学 2007-05-23 Alberto Castro , Angel Rubio , M. J. Stott

We study the existence of sign-changing solutions for a non-local version of the sinh-Poisson equation on a bounded one-dimensional interval $I$, under Dirichlet conditions in the exterior of $I$. This model is strictly related to the…

偏微分方程分析 · 数学 2020-08-31 Azahara DelaTorre , Gabriele Mancini , Angela Pistoia

This is Part II of our paper in which we prove finite time blowup of the 2D Boussinesq and 3D axisymmetric Euler equations with smooth initial data of finite energy and boundary. In Part I of our paper [ChenHou2023a], we establish an…

偏微分方程分析 · 数学 2024-06-18 Jiajie Chen , Thomas Y. Hou

We consider a nonlinear Schrodinger equation with power nonlinearity, either on a compact manifold without boundary, or on the whole space in the presence of harmonic confinement, in space dimension one and two. Up to introducing an extra…

偏微分方程分析 · 数学 2020-12-16 Rémi Carles , Tohru Ozawa

The general theory of matching conditions is developed for gravitational theories in two spacetime dimensions. Models inspired from general relativity and from string theory are considered. These conditions are used to study collapsing dust…

高能物理 - 理论 · 物理学 2010-04-06 R. B. Mann , S. F. Ross

We present a quantization condition for the spectrum of a system composed of three identical bosons in a finite volume with periodic boundary conditions. This condition gives a relation between the finite volume spectrum and infinite volume…

高能物理 - 格点 · 物理学 2013-05-29 Raul A. Briceno , Zohreh Davoudi

We study continuously self-similar solutions of four-dimensional Einstein-Maxwell-dilaton theory, with an arbitrary dilaton coupling. Self-similarity is an emergent symmetry of gravitational collapse near the threshold of black hole…

广义相对论与量子宇宙学 · 物理学 2018-12-07 Jorge V. Rocha , Marija Tomašević

The Pauli-Poisson equation is a semi-relativistic model for charged spin-1/2-particles in a strong external magnetic field and a self-consistent electric potential computed from the Poisson equation in 3 space dimensions. It is a system of…

偏微分方程分析 · 数学 2023-06-12 Jakob Möller

In this paper, a two-component variant of the Degasperis-Procesi equation on the real line is discussed. Applying Kato's theory, we first prove the local well-posedness for the equation under consideration in $H^s\times H^{s-1}$, for $s\geq…

偏微分方程分析 · 数学 2012-04-12 Martin Kohlmann

We investigate the general relativistic collapse of spherically symmetric, massless spin-1/2 fields at the threshold of black hole formation. A spherically symmetric system is constructed from two spin-1/2 fields by forming a spin singlet…

广义相对论与量子宇宙学 · 物理学 2009-11-10 Jason F. Ventrella , Matthew W. Choptuik

The "melting" of self-formed rigid structures made of a small number of interacting classical particles confined in an irregular two-dimensional space is investigated using Monte Carlo simulations. It is shown that the interplay of…

无序系统与神经网络 · 物理学 2013-06-13 Dyuti Bhattacharya , Amit Ghosal

This article is concerned with the infinite depth water wave equation in two space dimensions. We consider this problem expressed in position-velocity potential holomorphic coordinates. Viewing this problem as a quasilinear dispersive…

偏微分方程分析 · 数学 2014-10-14 John Hunter , Mihaela Ifrim , Daniel Tataru

The problem of ballistic annihilation for a spatially homogeneous system is revisited within Boltzmann's kinetic theory in two and three dimensions. Exact analytical results are derived for the time evolution of the particle density for…

统计力学 · 物理学 2009-11-07 Francois Coppex , Michel Droz , Jaroslaw Piasecki , Emmanuel Trizac , Peter Wittwer

We derive the universal collapse law of degree 1 equivariant wave maps (solutions of the sigma-model) from the 2+1 Minkowski space-time,to the 2-sphere. To this end we introduce a nonlinear transformation from original variables to blowup…

偏微分方程分析 · 数学 2011-08-01 Yu. N. Ovchinnikov , I. M. Sigal

We consider the Schr\"odinger equation in dimension two with a fixed, pointwise, focusing nonlinearity and show the occurrence of a blow-up phenomenon with two peculiar features: first, the energy threshold under which all solutions blow up…

偏微分方程分析 · 数学 2020-04-20 Riccardo Adami , Raffaele Carlone , Michele Correggi , Lorenzo Tentarelli

Let $v$ be a solution of the axially symmetric Euler equations (ASE) in a finite cylinder in $\mathbb{R}^3$. We show that suitable blow-up limits of possible velocity singularity and most self similar vorticity singularity near maximal…

偏微分方程分析 · 数学 2023-10-13 Qi S. Zhang

In this paper, we provide the two-body exact solutions of two dimensional (2D) Schr\"{o}dinger equation with isotropic $\pm 1/r^3$ interactions. Analytic quantum defect theory are constructed base on these solutions and are applied to…

量子气体 · 物理学 2016-09-29 Jianwen Jie , Ran Qi

We construct radially symmetric self-similar blow-up profiles for the mass supercritical nonlinear Schr\"odinger equation $i\partial_t u + \Delta u + |u|^{p-1}u=0$ on $\mathbf{R}^d$, close to the mass critical case and for any space…

偏微分方程分析 · 数学 2019-11-27 Yakine Bahri , Yvan Martel , Pierre Raphaël
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