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arXiv 2203.02174cond-mat.stat-mechquant-ph
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自旋链耗散的量子化非平衡热力学研究

Dissipation in spin chains using quantized nonequilibrium thermodynamics

Massimo Borrelli, Hans Christian Öttinger

摘要:

我们研究了开放的动态链的相互作用的自旋使用的量子化版本的GENERIC方程从经典的平衡态热力学。我们专注于不同规模的链的平衡和非平衡的情况下。虽然在平衡的情况下,我们证明了热平衡的正确的多体吉布斯密度矩阵,在非平衡动力学,我们显示了一个弹道扩散过渡的稳态能量流和缩放是一致的傅立叶定律的热传递。

英文摘要:

We investigate the open dynamics of a chain of interacting spins using the quantized version of the GENERIC equation from classical out-of-equilibrium thermodynamics. We focus on both equilibrium and nonequilibrium scenarios for chains of different sizes. While in the equilibrium case we demonstrate thermal equilibration to the correct many-body Gibbs density matrix, in the nonequilibrium dynamics we show a ballistic-to-diffusive transition in the steady-state energy current and a scaling that is consistent with Fourier's law of heat transfer.

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