Periodically driven closed quantum systems are expected to eventually heat up to infinite
temperature; reaching a steady state described by a circular orthogonal ensemble (COE) …

Exact solutions of quantum lattice models serve as useful guides for interpreting physical
phenomena in condensed matter systems. Prominent examples of integrability appear in …

The study of thermalization and its breakdown in isolated systems has led to a deeper
understanding of nonequilibrium quantum states and their dependence on initial conditions …

The ergodicity postulate, a foundational pillar of Gibbsian statistical mechanics predicts that
a periodically driven (Floquet) system in the absence of any conservation law heats to a …

Nonintegrable many-body quantum systems typically thermalize at long times through the
mechanism of quantum chaos. However, some exceptional systems, such as those …

We demonstrate the existence of prethermal discrete time crystals whose sub-harmonic
response is entirely localized to zero-dimensional corner modes. Within the exponentially …

The long-time dynamics of quantum systems, typically, but not always, results in a thermal
steady state. The microscopic processes that lead to or circumvent this fate are of interest …

The purpose of this thesis is to investigate the physics of magnetic systems away from
equilibrium. Nonequilibrium phenomena are intriguing for their fundamental and …