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Transport of Brownian particles interacting with each other via the Morse potential is investigated in the presence of an ac driving force applied locally at one end of the chain. By using numerical simulations, we find that the system can…

统计力学 · 物理学 2012-08-16 Bao-quan Ai , Ya-feng He , Wei-rong Zhong

On the basis of the linear response transport theory, the general expressions for the thermoelectric transport coefficients, such as thermoelectric power (S), Nernst coefficient (\nu), and thermal conductivity (\kappa), are derived by using…

强关联电子 · 物理学 2009-11-07 Hiroshi Kontani

We study thermoelectric transport properties of fractional quantum Hall systems based on exact diagonalization calculation. Based on the relation between thermoelectric response and thermal entropy, we demonstrate that thermoelectric Hall…

介观与纳米尺度物理 · 物理学 2020-07-01 D. N. Sheng , Liang Fu

We study the thermoelectric transport coefficients of a one-dimensional (1D) electron waveguide connected to one and then two off-channel cavities, in the presence of dephasing phonons. The model system is that of a linear chain described…

介观与纳米尺度物理 · 物理学 2013-04-15 Adel Abbout , Henni Ouerdane , Christophe Goupil

We consider the overdamped dynamics of a paradigmatic long-range system of particles residing on the sites of a one-dimensional lattice, in the presence of thermal noise. The internal degree of freedom of each particle is a periodic…

统计力学 · 物理学 2013-12-03 Shamik Gupta , Alessandro Campa , Stefano Ruffo

Producing a large current typically requires large dissipation, as is the case in electric conduction, where Joule heating is proportional to the square of the current. Stochastic thermodynamics offers a framework to study nonequilibrium…

量子物理 · 物理学 2021-11-17 Hiroyasu Tajima , Ken Funo

With subrecoil-laser-cooled atoms one may reach nano-Kelvin temperatures while the ergodic properties of these systems do not follow usual statistical laws. Instead, due to an ingenious trapping mechanism in momentum space,…

统计力学 · 物理学 2021-10-04 Eli Barkai , Günter Radons , Takuma Akimoto

The pressure-temperature phase diagram of a one-component system, with particles interacting through a spherically symmetric pair potential in two dimensions is studied. The interaction consists of a hard core plus an additional repulsion…

统计力学 · 物理学 2009-10-31 E. A. Jagla

Anomalous transport of a particle subjected to non-Ohmic damping of the power $\delta$ in a tilted periodic potential is investigated via Monte Carlo simulation of generalized Langevin equation. It is found that the system exhibits two…

统计力学 · 物理学 2009-11-13 Kun Lü , Jing-Dong Bao

Charge transport is a revealing probe of the quantum properties of materials. Strong interactions can blur charge carriers resulting in a poorly understood "quantum soup". Here we study the conductivity of the Fermi-Hubbard model, a testing…

Understanding and controlling quantum transport in low-dimensional systems is pivotal for heat management at the nanoscale. One promising strategy to obtain the desired transport properties is to engineer particular spectral structures. In…

无序系统与神经网络 · 物理学 2022-04-27 Cecilia Chiaracane , Archak Purkayastha , Mark T. Mitchison , John Goold

We consider a class of either fermionic or bosonic noninteracting open quantum chains driven by dissipative interactions at the boundaries and study the interplay of coherent transport and dissipative processes, such as bulk dephasing and…

统计力学 · 物理学 2017-11-17 Federico Carollo , Juan P. Garrahan , Igor Lesanovsky , Carlos Pérez-Espigares

We study heat transfer in one-dimensional Fermi-Pasta-Ulam-Tsingou type systems with long-range (LR) interactions. The strength of the LR interaction between two lattice sites decays as a power $\sigma$ of the inverse of their distance. We…

统计力学 · 物理学 2024-03-25 Daxing Xiong , Jianjin Wang

We study particle current in a recently proposed model for coherent quantum transport. In this model a system connected to mesoscopic Fermi reservoirs (meso-reservoir) is driven out of equilibrium by the action of super reservoirs…

统计力学 · 物理学 2013-01-01 S. Ajisaka , F. Barra , C. Mejia-Monasterio , T. Prosen

We study the quantum phase transition of the one-dimensional phase model in the presence of dissipative frustration, provided by an interaction of the system with the environment through two non-commuting operators. Such a model can be…

统计力学 · 物理学 2018-04-25 Dominik Maile , Sabine Andergassen , Wolfgang Belzig , Gianluca Rastelli

In a recent study, (Jain et al 2007 Phys. Rev. Lett. 99 190601), a symmetric exclusion process with time-dependent hopping rates was introduced. Using simulations and a perturbation theory, it was shown that if the hopping rates at two…

统计力学 · 物理学 2008-11-17 Rahul Marathe , Kavita Jain , Abhishek Dhar

The laws of thermodynamics require any initial macroscopic inhomogeneity in extended many-body systems to be smoothed out by the time evolution through the activation of transport processes. In generic, non-integrable quantum systems,…

Flow of dissipative particles driven by peristaltic motion of a tube is numerically studied. A transition from slow unjammed flow to fast jammed flow is found through the observation of the mass flux if the minimum width of the peristaltic…

软凝聚态物质 · 物理学 2012-03-12 Naoki Yoshioka , Hisao Hayakawa

We study thermal conductivity for one-dimensional electronic fluid. The many-body Hilbert space is partitioned into bosonic and fermionic sectors that carry the thermal current in parallel. For times shorter than bosonic Umklapp time, the…

强关联电子 · 物理学 2019-05-23 R. Samanta , I. V. Protopopov , A. D. Mirlin , D. B. Gutman

We report a detailed analysis of the Drude weights for both thermal and spin transport in one dimensional spin-1/2 systems by means of exact diagonalization and analytic approaches at finite temperatures. Transport properties are studied…

强关联电子 · 物理学 2020-03-31 F. Heidrich-Meisner , A. Honecker , D. C. Cabra , W. Brenig
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