@article{9428,
  abstract     = {Thermalization is the inevitable fate of many complex quantum systems, whose dynamics allow them to fully explore the vast configuration space regardless of the initial state---the behaviour known as quantum ergodicity. In a quest for experimental realizations of coherent long-time dynamics, efforts have focused on ergodicity-breaking mechanisms, such as integrability and localization. The recent discovery of persistent revivals in quantum simulators based on Rydberg atoms have pointed to the existence of a new type of behaviour where the system rapidly relaxes for most initial conditions, while certain initial states give rise to non-ergodic dynamics. This collective effect has been named ”quantum many-body scarring’by analogy with a related form of weak ergodicity breaking that occurs for a single particle inside a stadium billiard potential. In this Review, we provide a pedagogical introduction to quantum many-body scars and highlight the emerging connections with the semiclassical quantization of many-body systems. We discuss the relation between scars and more general routes towards weak violations of ergodicity due to embedded algebras and non-thermal eigenstates, and highlight possible applications of scars in quantum technology.},
  author       = {Serbyn, Maksym and Abanin, Dmitry A. and Papić, Zlatko},
  issn         = {1745-2481},
  journal      = {Nature Physics},
  number       = {6},
  pages        = {675–685},
  publisher    = {Nature Research},
  title        = {{Quantum many-body scars and weak breaking of ergodicity}},
  doi          = {10.1038/s41567-021-01230-2},
  volume       = {17},
  year         = {2021},
}