Geometry of rare regions behind Griffiths singularities in random quantum magnets
Geometry of rare regions behind Griffiths singularities in random quantum magnets
In many-body systems with quenched disorder, dynamical observables can be singular not only at the critical point, but in an extended region of the paramagnetic phase as well. These Griffiths singularities are due to rare regions, which are locally in the ordered phase and contribute to a large susceptibility. Here, …