Butterfly Floquet Spectrum in Driven SU(2) Systems
Butterfly Floquet Spectrum in Driven SU(2) Systems
The Floquet spectrum of a class of driven SU(2) systems is shown to display a butterfly pattern with multifractal properties. The level crossing between Floquet states of the same parity or different parities is studied. The results are relevant to studies of fractal statistics, quantum chaos, coherent destruction of tunneling, …