Random quantum circuits, chaos and quantum thermalization

These notes accompany lectures given in June 2025 at the summer school \emph{Fundamental Problems in Statistical Physics XVI}. They offer a short introduction to random quantum circuits as simple models for generic many-body quantum systems. They give an outline of the motivation for introducing these models, starting from ideas of random matrix theory. They also provide a sketch of calculations of some of the quantities of most physical interest, based on an average over an ensemble of systems. These quantities give insights into operator spreading, entanglement dynamics and spectral correlations.

Source: arXiv:2608.21303v1 - http://arxiv.org/abs/2608.21303v1 PDF: https://arxiv.org/pdf/2608.21303v1 Original Link: http://arxiv.org/abs/2608.21303v1