Description
The relaxation and final thermalization of strongly interacting quantum systems far away from equilibrium is a central problem in modern physics. The quenched unitary Bose gas forms an effective quantum simulator for the physics that drives these systems, allowing for a direct study of nontrivial nonequilibrium phenomena such as prethermalization, universality and ergodicity. We analyze the dynamics of the unitary Bose gas using a cluster expansion method, which allows us to directly track the sequential development of few-body quantum correlations embedded in the many-body system. Using this method, we study the influence of nonperturbative few-body effects, such as the development of bound states of the medium, an embedded Efimov effect, and the collective condensation of doubles and triples. Subsequently, we show how the heating of the gas at intermediate times is driven predominantly by strong three-body scattering, thus framing the post-quench dynamics as fully coherent, instead of strongly driven by nonuniversal particle losses.| Period | 11 Apr 2024 |
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| Held at | Radboud University Nijmegen, Netherlands |
| Degree of Recognition | Local |