An analytical prediction is established of how an isolated many-body quantum system relaxes towards its thermal longtime limit under the action of a time-independent perturbation, but still remaining sufficiently close to a reference case whose temporal relaxation is known. This is achieved within the conceptual framework of a typicality approach by showing and exploiting that the time-dependent expectation values behave very similarly for most members of a suitably chosen ensemble of perturbations. The predictions are validated by comparison with various numerical and experimental results from the literature.

中文翻译：

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扰动多体量子系统与数值的弛豫理论与实验

建立了一个分析预测，说明孤立的多体量子系统如何在与时间无关的摄动的作用下朝其热长时间极限松弛，但仍足够接近已知其时间松弛的参考情况。这是通过示出和利用的是依赖于时间的期望值表现非常类似地，对于扰动的适当选择的合奏中的大多数成员一个典型性的方法的概念框架内实现的。通过与文献中的各种数值和实验结果进行比较，可以验证这些预测。