平衡态外的Korshunov瞬子
Korshunov instantons out of equilibrium
摘要：
零维耗散作用量具有称为Korshunov瞬子的非平凡极小值。到目前为止，它们只被认为是虚时间表示，仅限于平衡系统。在这项工作中，我们重建和推广Korshunov瞬子使用实时Keldysh方法。这使我们能够制定一般非平衡条件下的耗散作用理论。讨论了该理论在强偏压量子点输运中的可能应用。
英文摘要：
Zero-dimensional dissipative action possesses non-trivial minima known as Korshunov instantons. They have been known so far only for imaginary time representation that is limited to equilibrium systems. In this work we reconstruct and generalise Korshunov instantons using real-time Keldysh approach. This allows us to formulate the dissipative action theory for generic non-equilibrium conditions. Possible applications of the theory to transport in strongly biased quantum dots are discussed..
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