论文标题
热场动力学：量子混乱与腐蚀性
Thermofield dynamics: Quantum Chaos versus Decoherence
论文作者
论文摘要
量子混乱施加了普遍的光谱特征，以隔离多体系统的热场动力学。初始和随时间发展的热场双状态之间的保真度随时间的变化而表现出衰减，倾斜，坡道和高原。破裂的来源会导致不合时宜的进化，并导致信息丢失。能量逐渐抑制量子噪声波动，并与光谱相关性相关。消毒进一步延迟了倾角的外观，并缩短了与混乱行为相关的线性坡道的跨度。量子混乱的签名与信息损失之间的相互作用取决于在随机的sachdev-ye-kitaev模型中的脱碳，浸入和高原特征时间之间的竞争。
Quantum chaos imposes universal spectral signatures that govern the thermofield dynamics of a many-body system in isolation. The fidelity between the initial and time-evolving thermofield double states exhibits as a function of time a decay, dip, ramp and plateau. Sources of decoherence give rise to a nonunitary evolution and result in information loss. Energy dephasing gradually suppresses quantum noise fluctuations and the dip associated with spectral correlations. Decoherence further delays the appearance of the dip and shortens the span of the linear ramp associated with chaotic behavior. The interplay between signatures of quantum chaos and information loss is determined by the competition among the decoherence, dip and plateau characteristic times, as demoonstrated in the stochastic Sachdev-Ye-Kitaev model.
