About
In the last few years, many instances of local Hamiltonians with abnormal thermalization properties have been found. These include models with Hilbert space fragmentation and quantum many-body scars. In an ideal scenario, we would like to characterize the conditions under which abnormal thermalization can occur and, if it does, predict its characteristics. In this talk, I will demonstrate how generalized symmetries can lead to an exponential increase in the number of disconnected sectors of the Hilbert space, which has been taken as evidence of ergodicity breaking. I will argue that, in certain instances, this should not be regarded as ergodicity-breaking, namely when it can be fully explained within the framework of generalized symmetries, including non-invertible symmetries, that have been largely unexplored in this context. Notable examples include the PXP model and gauge theories, particularly Quantum Link Models in higher dimensions.
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The talk
Credits and licence
- Institution
- CERN
- Speaker
- Joao C. Pinto Barros
- Year
- 2026
- Language
- English
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Teens profiles and older, judged from what the source says about it. How courses are placed