Disorder-induced dynamical Griffiths singularities after certain quantum quenches

We demonstrate that in a class of disordered quantum systems the dynamical partition function is not an analytical function in a time window after certain quantum quenches. We related this behavior to rare and large regions with atypical inhomogeneity configurations. We also quantify the strength of the associated singularities and their signatures in experiments and numerical studies.

Automated summary

We investigate a class of disordered quantum systems and find that the dynamical partition function exhibits non-analytical behavior in a time window after certain quantum quenches. This behavior is attributed to rare and large regions with atypical inhomogeneity configurations. We quantify the strength of the associated singularities and their experimental and numerical signatures.