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Résumé |
A number of experimental platforms for quantum simulations, from ultracold
atoms to Rydberg and circuit QED arrays, can be modeled as open Markovian
quantum many-body systems, where coherent (Hamiltonian) evolution competes with
dissipative processes due to external environments or stochastic measurements.
Out of this competition, a variety of non-trivial stationary states and
dynamical behavior emerge and novel critical phenomena arise, which are unique
to this open setting.
In this talk I will review recent progress in this field and present our
results on prototype models for strongly correlated open Markovian systems,
displaying genuine nonequilibrium effects such as finite-frequency criticality
and breaking of time-translational symmetry (aka quantum time-crystals),
quantum multistability, or non-hermitian phase transitions. |
