标题： 用复杂性探测原初量子涨落的自一致性 显示英文标题

标题： Probing the self-coherence of primordial quantum fluctuations with complexity

摘要： 我们当前早期宇宙范式的直接证据是密度扰动的量子力学起源的直接证据，这些密度扰动被推测为我们的宇宙大尺度结构的种子。 最近提出的一种新现象是再相干，其中绝热部分和熵部分之间的特定相互作用导致绝热模式在线性熵暂时增加后仍保持相干态。 在本文中，我们选择最一般的高斯作用量，并分析线性熵、纯化复杂度（COP）和形成复杂度（COF）的演化，以捕捉该模型中退相干和再相干之间的相互作用。 在存在两种驱动这两种相反特性的耦合的情况下，我们强调COF是诊断这种开放量子系统动力学的有效工具。 显示英文摘要

摘要： A smoking gun for our current paradigm of the early universe would be direct evidence for the quantum mechanical origin of density perturbations which are conjectured to seed the large scale structure of our universe. A recently-proposed novel phenomenon is that of recoherence, wherein a specific interaction between the adiabatic and the entropic sector leads to the adiabatic mode retaining a coherent state after a transient increase in linear entropy. In this paper, we choose the most general Gaussian action and analyze the evolution of linear entropy, complexity of purification (COP), and complexity of formation (COF) to capture the interplay between decoherence and recoherence in this model. In the presence of two types of couplings that drive these two opposing characteristics, we highlight how COF is an efficient tool for diagnosing dynamics for such an open quantum system.