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We present a simple physical model that recapitulates several features of biological evolution, while being based only on thermally-driven attachment and detachment of elementary building blocks. Through its dynamics, this model samples a…

种群与进化 · 定量生物学 2025-07-11 Guy Bunin , Olivier Rivoire

We analyze a simple macroscopic model describing the evolution of a cloud of particles confined in a magneto-optical trap. The behavior of the particles is mainly driven by self--consistent attractive forces. In contrast to the standard…

偏微分方程分析 · 数学 2016-10-06 Julien Barré , Dan Crisan , Thierry Goudon

Non-Hermitian systems are widespread in both classical and quantum physics. The dynamics of such systems has recently become a focal point of research, showcasing surprising behaviors that include apparent violation of the adiabatic theorem…

量子物理 · 物理学 2026-01-15 Parveen Kumar , Yuval Gefen , Kyrylo Snizhko

We investigate an $N$-particle Bose-Hubbard dimer with an additional effective decay term in one of the sites. A mean-field approximation for this non-Hermitian many-particle system is derived, based on a coherent state approximation. The…

量子物理 · 物理学 2008-10-10 E. M. Graefe , H. J. Korsch , A. E. Niederle

We consider physical Hamiltonians that can be represented by the multiparametric Gaussian ensembles, theoretically derive the state ensembles for its eigenstates and analyze the effect of varying system conditions on its bipartite…

量子物理 · 物理学 2026-04-14 Devanshu Shekhar , Pragya Shukla

Mechanisms are elucidated underlying the existence of dynamical systems whose generic solutions approach asymptotically (at large time) isochronous evolutions: all their dependent variables tend asymptotically to functions periodic with the…

可精确求解与可积系统 · 物理学 2015-05-13 Francesco Calogero , David Gomez-Ullate

We show that for a large class of evolutionary nonlinear and nonlocal partial differential equations, symmetry of solutions implies very restrictive properties of the solutions and symmetry axes. These restrictions are formulated in terms…

偏微分方程分析 · 数学 2017-09-22 Gabriele Bruell , Mats Ehrnstrom , Anna Geyer , Long Pei

The self-consistent system of master equations describing the kinetics of a relativistic non-Abelian plasma, influenced by curvature interactions, is formulated. Non-minimal (curvature induced) coupling is shown to modify all the subsystems…

广义相对论与量子宇宙学 · 物理学 2007-10-04 A. B. Balakin

Physical fundamentals of the self-organizing theory for the system with varying constraints are considered. A variation principle, specifically the principle of dynamic harmonization as a generalization of the Gauss-Hertz principle for the…

综合物理 · 物理学 2013-07-19 S. Adamenko , V. Bolotov , V. Novikov

The quantum mechanics and thermodynamics of SU(2) non-Abelian Chern-Simons particles (non-Abelian anyons) in an external magnetic field are addressed. We derive the N-body Hamiltonian in the (anti-)holomorphic gauge when the Hilbert space…

高能物理 - 理论 · 物理学 2009-10-31 Serguei B. Isakov , Gustavo Lozano , Stéphane Ouvry

Recently a Hamiltonian formulation for the evolution of the universe dominated by multiple oscillatory scalar fields was developed by the present author and was applied to the investigation of the evolution of cosmological perturbations on…

广义相对论与量子宇宙学 · 物理学 2014-11-17 Takashi Hamazaki

Symmetries impose structure on the Hilbert space of a quantum mechanical model. The mathematical units of this structure are the irreducible representations of symmetry groups and I consider how they function as conceptual units of…

量子物理 · 物理学 2018-01-29 N. L. Harshman

Many-body physics is one very well suited field for testing quantum algorithms and for finding working heuristics on present quantum computers. We have investigated the non-equilibrium dynamics of one- and two-electron systems, which are…

量子物理 · 物理学 2022-07-06 Sabine Tornow , Wolfgang Gehrke , Udo Helmbrecht

Pattern formation often occurs in confined systems, yet how boundaries shape patterning dynamics is unclear. We develop techniques to analyze confinement effects in nonlocal advection-diffusion equations, which generically capture the…

斑图形成与孤子 · 物理学 2025-09-11 Jan Rombouts , Michael L Zhao , Alexander Aulehla , Anna Erzberger

We study the evolution of a many-particle system whose wave function obeys the N-body Schroedinger equation under Bose symmetry. The system Hamiltonian describes pairwise particle interactions in the absence of an external potential. We…

偏微分方程分析 · 数学 2008-03-18 Manoussos G. Grillakis , Dionisios Margetis

We study the null space degeneracy of open quantum systems with multiple non-Abelian, strong symmetries. By decomposing the Hilbert space representation of these symmetries into an irreducible representation involving the direct sum of…

量子物理 · 物理学 2020-05-26 Zhao Zhang , Joseph Tindall , Jordi Mur-Petit , Dieter Jaksch , Berislav Buča

We analyze the question of screening versus confinement in bosonized massless QCD in two dimensions. We deduce the screening behavior of massless $SU(N_c)$ QCD with flavored fundamental fermions and fermions in the adjoint representation.…

高能物理 - 理论 · 物理学 2009-10-30 Yitzhak Frishman , Jacob Sonnenschein

A novel approach to account for hard-body interactions in (overdamped) Brownian dynamics simulations is proposed for systems with non-vanishing force fields. The scheme exploits the analytically known transition probability for a Brownian…

计算物理 · 物理学 2012-11-07 Hans Behringer , Ralf Eichhorn

We analyze constrained quantum systems where the dynamics do not preserve the constraints. This is done in particular for the restriction of a quantum particle in Euclidean n-space to a curved submanifold, and we propose a method of…

高能物理 - 理论 · 物理学 2008-11-26 Hendrik Grundling , C. A. Hurst

Entanglement asymmetry has emerged as a powerful tool for characterizing symmetry breaking in quantum many-body systems. In this Letter, we explore how symmetry is dynamically broken through the lens of entanglement asymmetry in two…

量子物理 · 物理学 2025-09-26 Hui Yu , Zi-Xiang Li , Shi-Xin Zhang