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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Nonequilibrium quantum chains under multisite Lindblad baths

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Author(s):
Guimaraes, Pedro H. ; Landi, Gabriel T. ; de Oliveira, Mario J.
Total Authors: 3
Document type: Journal article
Source: Physical Review E; v. 94, n. 3 SEP 30 2016.
Web of Science Citations: 5
Abstract

We study a quantum XX chain coupled to two heat reservoirs that act on multiple sites and are kept at different temperatures and chemical potentials. The baths are described by Lindblad dissipators, which are constructed by direct coupling to the fermionic normal modes of the chain. Using a perturbative method, we are able to find analytical formulas for all steady-state properties of the system. We compute both the particle or magnetization current and the energy current, both of which are found to have the structure of Landauer's formula. We also obtain exact formulas for the Onsager coefficients. All properties are found to differ substantially from those of a single-site bath. In particular, we find a strong dependence on the intensity of the bath couplings. In the weak-coupling regime, we show that the Onsager reciprocal relations are satisfied. (AU)

FAPESP's process: 14/01218-2 - Stochastic processes applied to out-of-equilibrium systems
Grantee:Gabriel Teixeira Landi
Support type: Regular Research Grants