Rövid cím:
Non-ergodicity in kinetically constrained models
Időpont:
2024. 06. 25. 14:30
Hely:
Schay room, BME Building F, stairway I, first floor
Előadó:
Riccardo J. Valencia-Tortora (Mainz)
Riccardo J. Valencia-Tortora
Johannes Gutenberg-Universität, Mainz, Germany
Non-ergodicity in kinetically constrained models: localization, fragmentation, and confinement
Strongly interacting systems are generally expected to thermalize, making local information of the initial state scattered into highly non-local degrees of freedom that are challenging to access. However, various mechanisms exist that could prevent thermalization and, therefore, aid in passively protecting coherence and quantum information.
In this talk, I will show how different ergodicity-breaking mechanisms manifest in a single class of models, known as kinetically constrained models, which can be realized in current platforms based on Rydberg arrays [1] and superconducting circuits [2]. Then, I will discuss a novel dynamical phase transition between an ergodic phase and a non-ergodic one that these models can host, which can be diagnosed through the complexity of simulating the dynamics using tensor networks [3].
[1] R. J. Valencia-Tortora, et al., Phys. Rev. Lett. 132, 223201
[2] R. J. Valencia-Tortora, et al., PRX Quantum 3, 020346
[3] Manthan Badbaria, et al., in preparation