量子猝灭后长时间的模式耦合引起的耗散和热效应
Mode coupling induced dissipative and thermal effects at long times after a quantum quench
摘要：
Luttinger液体中的相互作用猝灭可以使其进入无热稳态。我们分析了周期势引起的模耦合项对这种非平衡态的影响。采用微扰重整化群的方法，我们表明，即使当周期性的潜在的是一个无关的扰动平衡，它有重要的后果上的非热稳态，因为它产生的温度以及耗散，因此有限的寿命的玻色子模式。
英文摘要：
An interaction quench in a Luttinger liquid can drive it into an athermal steady state. We analyze the effects on such an out of equilibrium state of a mode coupling term due to a periodic potential. Employing a perturbative renormalization group approach we show that even when the periodic potential is an irrelevant perturbation in equilibrium, it has important consequences on the athermal steady state as it generates a temperature as well as a dissipation and hence a finite life-time for the bosonic modes.
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