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We investigate the effect of a time-reversal breaking impurity term on both the equilibrium and non-equilibrium critical properties of entanglement entropy (EE) in a three-spin interacting transverse Ising model which can be mapped to a…

统计力学 · 物理学 2018-04-24 Tanay Nag , Atanu Rajak

The state space for solutions of the compressible Euler equations with a general equation of state is examined. An arbitrary equation of state is allowed, subject only to the physical requirements of thermodynamics. An invariant region of…

偏微分方程分析 · 数学 2022-11-04 Hailiang Liu , Ferdinand Thein

We establish strong dynamical localization for a class of multi-particle Anderson models in a Euclidean space with an alloy-type random potential and a sub-exponentially decaying interaction of infinite range. For the first time in the…

数学物理 · 物理学 2014-07-18 Victor Chulaevsky

Non-Hermitian systems have recently attracted significant attention in photonics. One of the hallmarks of these systems is the possibility of realizing asymmetric mode switching and omnipolarizer action through the dynamic encirclement of…

光学 · 物理学 2020-10-22 J. B. Khurgin , Y. Sebbag , E. Edrei , R. Zektzer , K. Shastri , U. Levy , F. Monticone

Principal component analysis (PCA) is a powerful standard tool for reducing the dimensionality of data. Unfortunately, it is sensitive to outliers so that various robust PCA variants were proposed in the literature. This paper addresses the…

数值分析 · 数学 2019-02-13 Sebastian Neumayer , Max Nimmer , Simon Setzer , Gabriele Steidl

We study a weakly coupled supercritical elliptic system of the form \begin{equation*} \begin{cases} -\Delta u = |x_2|^\gamma \left(\mu_{1}|u|^{p-2}u+\lambda\alpha |u|^{\alpha-2}|v|^{\beta}u \right) & \text{in }\Omega,\\ -\Delta v =…

偏微分方程分析 · 数学 2018-09-03 Omar Cabrera , Mónica Clapp

We consider a coupled system of Navier-Stokes and Nernst-Planck equations, describing the evolution of the velocity and the concentration fields of dissolved constituents in an electrolyte solution. Motivated by recent applications in the…

偏微分方程分析 · 数学 2012-06-12 Dieter Bothe , André Fischer , Jürgen Saal

It is well-known that nonlinearity may lead to localization effects and coupling of internally resonant modes. However, research focused primarily on conservative systems commonly assumes that the near-resonant forced response closely…

斑图形成与孤子 · 物理学 2021-01-12 Malte Krack , Lawrence A. Bergman , Alexander F. Vakakis

Exceptional points (EPs), arising in non-Hermitian systems, have garnered significant attention in recent years, enabling advancements in sensing, wave manipulation, and mode selectivity. However, their role in quantum systems, particularly…

量子物理 · 物理学 2026-01-21 Chenghe Yu , Mingsheng Tian , Ningxin Kong , Matteo Fadel , Xinyao Huang , Qiongyi He

Local existence and well posedness for a class of solutions for the Euler Poisson system is shown. These solutions have a density $\rho$ which either falls off at infinity or has compact support. The solutions have finite mass, finite…

偏微分方程分析 · 数学 2017-09-26 Uwe Brauer , Lavi Karp

We study a coupled Fokker-Planck--Navier-Stokes (FPNS) system modeling the dynamics of interacting particles suspended in a viscous incompressible fluid, where the coupling occurs through a locally averaged Brinkman drag force. Our main…

偏微分方程分析 · 数学 2025-08-12 Roman Shvydkoy , Trevor Teolis

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 establish unique existence and stability of subsonic potential flow for steady Euler-Poisson system in a multidimensional nozzle of a finite length when prescribing the electric potential difference on non-insulated boundary from a fixed…

偏微分方程分析 · 数学 2013-06-04 Myoungjean Bae , Ben Duan , Chunjing Xie

A fundamental two-fluid model for describing dynamics of a plasma is the Euler-Poisson system, in which compressible ion and electron fluids interact with their self-consistent electrostatic force. Global smooth electron dynamics were…

数学物理 · 物理学 2015-05-18 Yan Guo , Benoit Pausader

The collapse of man-made and natural structures is a complex phenomenon that has been studied for centuries. We propose a new approach to understanding catastrophic instabilities, based on the idea that they do not occur at the critical…

斑图形成与孤子 · 物理学 2023-08-29 Klaus Regenauer-Lieb , Manman Hu

We consider the compressible Euler system with a family of nonlinear velocity alignments. The system is a nonlinear extension of the Euler-alignment system in collective dynamics. We show the asymptotic emergent phenomena of the system:…

偏微分方程分析 · 数学 2022-11-02 McKenzie Black , Changhui Tan

This paper concerns the structural stability of smooth cylindrically symmetric supersonic Euler-Poisson flows in nozzles. Both three-dimensional and axisymmetric perturbations are considered. On one hand, we establish the existence and…

偏微分方程分析 · 数学 2025-03-21 Chunpeng Wang , Zihao Zhang

Lines of exceptional points are robust in the 3-dimensional non-Hermitian parameter space without requiring any symmetry. However, when more elaborate exceptional structures are considered, the role of symmetry becomes critical. One such…

量子物理 · 物理学 2023-12-18 Xiaohan Cui , Ruo-Yang Zhang , Xulong Wang , Wei Wang , Guancong Ma , C. T. Chan

The presence of one or more species at some spatial locations but not others is a central matter in ecology. This phenomenon is related to ecological pattern formation. Nonlocal interactions can be considered as one of the mechanisms…

种群与进化 · 定量生物学 2017-12-29 Ozgur Aydogmus

This paper concerns the well-posedness of subsonic Euler-Poisson flows in a convergent nozzle. Due to the geometry of the nozzle, we first introduce a coordinate transformation to prove the existence of radially symmetric subsonic solutions…

偏微分方程分析 · 数学 2026-04-28 Yuanyuan Xing , Zihao Zhang
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