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A resistor-network picture of transitions is appropriate for the study of energy absorption by weakly chaotic or weakly interacting driven systems. Such "sparse" systems reach a novel non-equilibrium steady state (NESS) once coupled to a…

量子物理 · 物理学 2011-03-21 Daniel Hurowitz , Doron Cohen

Considering light-mediated long-range interactions between cold atoms in a magneto-optical trap (MOT), we present numerical evidence of a nonequilibrium steady state (NESS) for sufficiently large number of atoms (> 10^8). This state…

原子物理 · 物理学 2022-12-20 Marius Gaudesius , Yong-Chang Zhang , Thomas Pohl , Guillaume Labeyrie , Robin Kaiser

Many interesting phenomena in nature are described by stochastic processes with irreversible dynamics. To model these phenomena, we focus on a master equation or a Fokker-Planck equation with rates which violate detailed balance. When the…

统计力学 · 物理学 2016-10-11 R K P Zia , Jeffrey B Weiss , Dibyendu Mandal , Baylor Fox-Kemper

We investigate the nonstationary electronic transport in noninteracting nanostructures driven by a finite bias and time-dependent signals applied at their contacts to the leads. The systems are modelled by a tight-binding Hamiltonian and…

介观与纳米尺度物理 · 物理学 2009-11-13 Valeriu Moldoveanu , Vidar Gudmundsson , Andrei Manolescu

Elucidating transport mechanisms and predicting transport coefficients is crucial for advancing material innovation, design, and application. Yet, state-of-the-art calculations are restricted to exact simulations of small lattices with…

化学物理 · 物理学 2024-05-16 Srijan Bhattacharyya , Thomas Sayer , Andrés Montoya-Castillo

We investigate the nonequilibrium steady state (NESS) in an open quantum XXZ chain with strong $XY$ plane boundary polarization gradient. Using the general theory developed in [1], we show that in the critical $XXZ$ $|\Delta|<1$ easy plane…

量子物理 · 物理学 2017-09-27 Vladislav Popkov , Johannes Schmidt , Carlo Presilla

We use an adiabatic approximation in terms of instantaneous resonances to study the steady-state and time-dependent transport properties of interacting electrons in biased resonant tunneling heterostructures. This approach leads, in a…

凝聚态物理 · 物理学 2009-10-28 Carlo Presilla , Johannes Sjöstrand

Complex fluids in shear flow and biased dynamics in crowded environments exhibit counterintuitive features which are difficult to address both at theoretical level and by molecular dynamic simulations. To understand some of these features…

软凝聚态物质 · 物理学 2012-09-19 Francesco Turci , Estelle Pitard , Mauro Sellitto

We study electron transport in nanojunctions in which an electron on a quantum dot or a molecule is interacting with an N-state local impurity, a harmonic ("Holstein") mode, or a two-state system ("spin"). These two models, the…

介观与纳米尺度物理 · 物理学 2014-07-23 Lena Simine , Dvira Segal

Spectral, optical and transport properties of an anisotropic three-dimensional Holstein model are studied within the adiabatic approximation. The parameter regime is appropriate for organic semiconductors used in single crystal based field…

强关联电子 · 物理学 2015-05-27 C. A. Perroni , A. Nocera , V. Marigliano Ramaglia , V. Cataudella

Driven lattice gases serve as canonical models for investigating collective transport phenomena and properties of non-equilibrium steady states (NESS). Here we study one-dimensional transport with nearest-neighbor interactions both in…

统计力学 · 物理学 2013-08-13 Marcel Dierl , Mario Einax , Philipp Maass

We propose a mesoscopic thermometer for ultrasensitive detection based on the proximity effect in superconductor-normal metal (SN) heterostructures. The device is based on the zero-bias anomaly due to the inelastic Cooper pair tunneling in…

介观与纳米尺度物理 · 物理学 2023-07-26 Danilo Nikolić , Bayan Karimi , Diego Subero Rengel , Jukka P. Pekola , Wolfgang Belzig

The nonequilibrium steady state (NESS) of integrable spin chains experiencing strong boundary dissipation is accounted by introducing quasiparticles with a renormalized -- dissipatively dressed -- dispersion relation. This allows us to…

统计力学 · 物理学 2025-05-23 Vladislav Popkov , Xin Zhang , Carlo Presilla , Tomaž Prosen

Filtering the passive scalar transport equation in the large-eddy simulation (LES) of turbulent transport gives rise to the closure term corresponding to the unresolved scalar flux. Understanding and respecting the statistical features of…

流体动力学 · 物理学 2021-07-12 Ali Akhavan-Safaei , Mehdi Samiee , Mohsen Zayernouri

We investigate the structure of non-equilibrium steady states (NESS) for a class of exactly solvable models in the setting of a chain with left and right reservoirs. Inspired by recent results on the harmonic model, we focus on models in…

概率论 · 数学 2025-12-02 Frank Redig , Berend van Tol

We present a combined theoretical approach to study the nonequilibrium transport properties of nanoscale systems coupled to metallic electrodes and exhibiting strong electron-phonon interactions. We use the Keldysh Green function formalism…

介观与纳米尺度物理 · 物理学 2015-05-20 R. C. Monreal , F. Flores , A. Martin-Rodero

Ultrafast disordering observed after photo-excitation challenges the conventional picture of photo-induced transitions where symmetry-breaking takes place along a single collective coordinate. We propose that key spectroscopic signatures of…

强关联电子 · 物理学 2025-07-31 Francesco Valiera , Antonio Picano , Martin Eckstein

We study dynamic nonequilibrium electron charging phenomena in ballistic molecular devices at room temperature that compromise their response to bias and whose nature is evidently distinguishable from static Schottky-type potential…

介观与纳米尺度物理 · 物理学 2008-05-13 Ioannis Deretzis , Antonino La Magna

We study high-temperature spin transport through an anisotropic spin-1/2 Heisenberg chain in which integrability is broken by a single impurity close to the center of the chain. For a finite impurity strength, the level spacing statistics…

强关联电子 · 物理学 2018-12-24 Marlon Brenes , Eduardo Mascarenhas , Marcos Rigol , John Goold

We investigate the properties of the nonequilibrium steady state for the stochastic system driven by a nonlinear drift force and influenced by noises which are not identically and independently distributed. The nonequilibrium steady state…

统计力学 · 物理学 2013-05-29 Chulan Kwon , Ping Ao