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By means of a modified Lugiato-Lefever equation model, we investigate the nonlinear dynamics of dissipative wave structures in coherently-driven Kerr cavities with a parabolic potential. The potential stabilizes system dynamics, leading to…

光学 · 物理学 2023-05-02 Yifan Sun , Pedro Parra-Rivas , Mario Ferraro , Fabio Mangini , Stefan Wabnitz

We calculate the semileptonic and a subclass of sixteen nonleptonic two-body decays of the double charm baryon ground states $\Xi_{cc}^{++},\,\Xi_{cc}^{+}$ and $\Omega_{cc}^+$ where we concentrate on the nonleptonic decay modes. We identify…

高能物理 - 唯象学 · 物理学 2019-12-24 Thomas Gutsche , Mikhail A. Ivanov , Jürgen G. Körner , Valery E. Lyubovitskij , Zhomart Tyulemissov

We consider a lattice-gas model with an infinite range pairwise noncovex interaction. It might be relevant, for example, for adsorption of alkaline elements on W(112) and Mo(112). We study a competition between the effective dipole-dipole…

凝聚态物理 · 物理学 2009-10-28 Cz. Oleksy , J. Lorenc

We study the phase diagrams of a family of 3D "Walker-Wang" type lattice models, which are not topologically ordered but have deconfined anyonic excitations confined to their surfaces. We add a perturbation (analogous to that which drives…

强关联电子 · 物理学 2013-12-25 F. J. Burnell , C. W. von Keyserlingk , S. H. Simon

We use an extension of fundamental measure theory to lattice hard-core fluids to study the phase diagram of two different systems. First, two-dimensional parallel hard squares with edge-length $\sigma=2$ in a simple square lattice. This…

软凝聚态物质 · 物理学 2009-11-10 Luis Lafuente , Jose A. Cuesta

We analyze the nonequilibrium Kondo model at finite voltage and temperature by using a new formulation of the real-time renormalization group method with the Laplace variable as the flow parameter. We evaluate the energy-dependent spin…

介观与纳米尺度物理 · 物理学 2012-07-11 Mikhail Pletyukhov , Herbert Schoeller

A set of equations according to which the conducting medium consists of two fluids - laminar and vortex, has been obtained in the present paper by transforming MHD equations. In a similar way, an electronic fluid is assumed to consist of a…

chao-dyn · 物理学 2009-10-22 N. B. Volkov , A. M. Iskoldsky

We consider both equilibrium and kinetic aspects of the phase separation (``thermal faceting") of thermodynamically unstable crystal surfaces into a hill--valley structure. The model we study is an Ising lattice gas for a simple cubic…

凝聚态物理 · 物理学 2009-10-22 Joel D. Shore , Dirk Jan Bukman

We study a problem of non-adiabatic superfluid dynamics of spin-orbit coupled neutral fermions in two spatial dimensions. We focus on the two cases when the out-of-equilibrium conditions are initiated either by a sudden change of the…

超导电性 · 物理学 2021-07-21 Maxim Dzero , Ammar A. Kirmani , Emil A. Yuzbashyan

The electrohydrodynamics of vesicle suspensions is characterized by studying their pairwise interactions in applied DC electric fields in two dimensions. In the dilute limit, the rheology of the suspension is shown to vary nonlinearly with…

软凝聚态物质 · 物理学 2019-05-01 Bowei Wu , Shravan Veerapaneni

We examine the dynamics of a compressible active nematic liquid crystal on a frictional substrate. When frictional damping dominates over viscous dissipation, we eliminate flow in favor of active stresses to obtain a minimal dynamical model…

软凝聚态物质 · 物理学 2016-11-07 Pragya Srivastava , Prashant Mishra , M. Cristina Marchetti

In the absence of decoherence the current of fermionic particles across a finite lattice connecting two reservoirs (leads) with different chemical potentials is known to be ballistic. It is also known that decoherence typically suppresses…

量子物理 · 物理学 2026-04-15 Andrey R. Kolovsky

We consider the Nernst-Planck-Stokes system on a bounded domain of $\mathbb{R}^d$, $d=2,3$ with general nonequilibrium Dirichlet boundary conditions for the ionic concentrations. It is well known that, in a wide range of cases, equilibrium…

偏微分方程分析 · 数学 2025-01-09 Fizay-Noah Lee

We argue that a class of strongly spin-orbit coupled materials, including some pyrochlore iridates and the inverted band gap semiconductor HgTe, may be described by a minimal model consisting of the Luttinger Hamiltonian supplemented by…

强关联电子 · 物理学 2013-11-20 Eun-Gook Moon , Cenke Xu , Yong Baek Kim , Leon Balents

We consider a continuum model of active viscoelastic matter, whereby an active nematic liquid-crystal is coupled to a minimal model of polymer dynamics with a viscoelastic relaxation time $\tau_C$. To explore the resulting interplay between…

软凝聚态物质 · 物理学 2016-03-30 E. J. Hemingway , M. E. Cates , S. M. Fielding

There exist extensive studies on periodic and random perturbations of various continuous maps investigating their dynamics. This paper presents a random piecewise smooth map derived from a simple inductor-less switching circuit. The…

适应与自组织系统 · 物理学 2024-09-02 Soumyajit Seth , Abhijit Bera , Vikram Pakrashi

A system of hard rigid rods of length $k$ on hypercubic lattices is known to undergo two phases transitions when chemical potential is increased: from a low density isotropic phase to an intermediate density nematic phase, and on further…

统计力学 · 物理学 2022-03-14 Aagam Shah , Deepak Dhar , R. Rajesh

Nanoplatelets open up a wide range of possibilities for building materials with novel properties linked to their shape anisotropy. A challenge consists of controlling dynamically the order of positioning and orientation in three dimensions…

软凝聚态物质 · 物理学 2025-10-08 Imane Boucenna , Florent Carn , Ahmed Mourchid

We study the kinetics of the nematic-isotropic transition in a two-dimensional liquid crystal by using a lattice Boltzmann scheme that couples the tensor order parameter and the flow consistently. Unlike in previous studies, we find the…

软凝聚态物质 · 物理学 2009-11-07 Colin Denniston , Enzo Orlandini , J. M. Yeomans

For the driven-dissipative system of two coupled bosonic modes in a nonlinear cavity resonator, we demonstrate a sequence of phase transitions from a trivial steady state to two distinct dissipative time crystalline phases. These effects…

量子物理 · 物理学 2022-12-21 L. R. Bakker , M. S. Bahovadinov , D. V. Kurlov , V. Gritsev , Aleksey K. Fedorov , D. O. Krimer