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arXiv 2008.11080cond-mat.stat-mech
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非平衡可积系统中的纠缠扩展

Entanglement spreading in non-equilibrium integrable systems

Pasquale Calabrese

摘要:

这些是在Les Houches暑期学校关于“原子和凝聚态物理的可积性”的短期课程的讲义,2018年夏天。在这里,我教学讨论在孤立的可积量子系统的非平衡动力学过程中的纠缠传播的研究的最新进展。首先引入定态热力学熵是非平衡动力学过程中纠缠积累的概念,然后将这一概念与纠缠扩散的准粒子图像相结合,对任意可积模型中的纠缠熵随时间的演化提供定量预测,而不考虑相互作用强度。

英文摘要:

These are lecture notes for a short course given at the Les Houches Summer School on ``Integrability in Atomic and Condensed Matter Physics'', in summer 2018. Here, I pedagogically discuss recent advances in the study of the entanglement spreading during the non-equilibrium dynamics of isolated integrable quantum systems. I first introduce the idea that the stationary thermodynamic entropy is the entanglement accumulated during the non-equilibrium dynamics and then join such an idea with the quasiparticle picture for the entanglement spreading to provide quantitive predictions for the time evolution of the entanglement entropy in arbitrary integrable models, regardless of the interaction strength.

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