论文标题

使用量化非平衡热力学的自旋链中的耗散

Dissipation in spin chains using quantized nonequilibrium thermodynamics

论文作者

Borrelli, Massimo, Öttinger, Hans Christian

论文摘要

我们使用经典外部平衡热力学的量化版本的量化版本进行了相互作用的旋转链的开放动力学。我们专注于不同尺寸链的平衡和非平衡场景。在平衡情况下,我们证明了与正确的多体吉布斯密度矩阵的热平衡,在非平衡动力学中,我们在稳态能量电流中显示了弹道到降低的过渡,并且与傅立叶热传递定律一致的缩放率。

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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