with Romain Vasseur (UC Berkeley) and Sid Parameswaran (UC Irvine)
In a new preprint, we developed a new technique for looking at phase transitions between many-body localized phases (quantum glasses that do not obey the laws of thermodynamic equilibrium) and thermal classical fluids. This is a novel type of criticality – between quantum and classical – in which the laws of thermodynamics break down sharply at a phase transition.