Pietro Brighi - University of Vienna

Bistability and slow relaxation in dissipative chiral kinetically constrained models

In this talk, I will present recent results on dissipative kinetically constrained models, where dissipation and chirality conspire to produce rich dynamics and non-equilibrium phase diagrams. First, I will introduce a 2d classical model which is known to host robust bistability. Using the cluster mean-field method, we show that the bistable phase persists even when introducing quantum fluctuations; we further characterize the system dynamically, finding clear signatures of the transition. I will then move to a 1d model, amenable for tensor-network simulations, and show that in 1d bistability is robust to quantum fluctuations, but not to classical ones. The study of the steady-state phase diagram is complemented by dynamics, showing differences in both magnetization and entanglement propagation. These results highlight that dissipative kinetically constrained models are a great platform to investigate novel non-equilibrium phases of matter.