Quantum theory provides an extensive framework for the description of the equilibrium
properties of quantum matter. Yet experiments in quantum simulators have now opened up …

Nonequilibrium states of closed quantum many-body systems defy a thermodynamic
description. As a consequence, constraints such as the principle of equal a priori …

Signaled by nonanalyticities in the time evolution of physical observables, dynamic quantum
phase transitions (DQPTs) emerge in quench dynamics of topological systems and possess …

Recent work has revealed the central role played by the Kirkwood-Dirac quasiprobability
(KDQ) as a tool to properly account for non-classical features in the context of condensed …

Preparing an integrable system in a mixed state described by a thermal density matrix, we
subject it to a sudden quench and explore the subsequent unitary dynamics. To address the …

In closed quantum systems, dynamical phase transitions are identified by the nonanalytic
behavior of the return probability as a function of time. In this work, we study the nonunitary …

By utilizing biorthogonal bases, we develop a comprehensive framework for studying
biorthogonal dynamical quantum phase transitions in non-Hermitian systems. With the help …

The Loschmidt echo is a purely quantum-mechanical quantity whose determination for large
quantum many-body systems requires an exceptionally precise knowledge of all eigenstates …

A dynamical quantum phase transition can occur during time evolution of sudden quenched
quantum systems across a phase transition. It corresponds to the nonanalytic behavior at a …

We explore both pure and mixed state Floquet dynamical quantum phase transitions
(FDQFTs) in the one-dimensional p-wave superconductor with a time-driven pairing phase …