Quantum technologies represent a rapidly evolving field in which the specific properties of
quantum mechanical systems are exploited to enhance the performance of various …

Fidelity serves as a benchmark for the reliability in quantum information processes, and has
recently attracted much interest as a measure of the susceptibility of dynamics to …

It was proposed recently that the out-of-time-ordered four-point correlator (OTOC) may serve
as a useful characteristic of quantum-chaotic behavior, because, in the semiclassical limit …

We present a characterization of quantum phase transitions in terms of the the overlap
function between two ground states obtained for two different values of external parameters …

Recent experimental and theoretical works have made much progress toward
understanding nonequilibrium phenomena in thermalizing systems, which act as thermal …

Bringing together the key ideas from nonequilibrium statistical mechanics and powerful
methodology from quantum field theory, this 2008 book captures the essence of …

We study the decoherence of a one-particle system, whose classical correspondent is
chaotic, when it evolves coupled to a weak quenched environment. This is done by …

A boundary transfer matrix formulation allows to calculate the Loschmidt echo for one-
dimensional quantum systems in the thermodynamic limit. We show that nonanalyticities in …

Quantum computers, which process information encoded in quantum mechanical systems,
hold the potential to solve some of the hardest computational problems. A substantial …

Out-of-time-order correlations (OTOCs) characterize the scrambling, or delocalization, of
quantum information over all the degrees of freedom of a system and thus have been …