Abstract:
Quantum simulators, despite being still small-scale and noisy, are already challenging our understanding of many-body physics. Frameworks as thermal equilibrium and universality at phase transitions are being replaced by out-of-equilibrium dynamics and a plethora of non-universal, yet generic mechanisms that take place at finite times and system sizes. In this talk, after having introduced some recent developments in the field, I will present two recent results. First, I will show that, in the 2D quantum Ising model, phase-ordering dynamics can be retarded or impeded altogether by interface localization. I will also show how symmetry rebreaking---a dynamical transition that can destroy the order without ever leaving a symmetry-broken phase---can alter quantum phase ordering at intermediate timescales. Second, I will briefly outline how counterdiabatic driving, a method used so far to reduce diabatic excitations in small systems, can be extended to thermodynamically large systems and provide a classification tool for quantum phase transitions.This special seminar will take place on 25 March, noon-1PM, in the ground floor Lecture Hall in Al. Lotników, available on Zoom under the following link:
https://us06web.zoom.us/j/86976039901?pwd=Nxw4V42bAvQeF5ao88rbQBLTSHBa5n.1
ID: 869 7603 9901
Passcode: 148188
