Universal and nonuniversal level statistics in a chaotic quantum spin chain
Universal and nonuniversal level statistics in a chaotic quantum spin chain
We study the level statistics of an interacting multiqubit system, namely the kicked Ising spin chain, in the regime of quantum chaos. Long range quasienergy level statistics show effects analogous to the ones observed in semiclassical systems due to the presence of short classical periodic orbits, while short range level …