Nonlinear Sciences – Chaotic Dynamics
Scientific paper
2011-01-17
Nonlinear Sciences
Chaotic Dynamics
4 pages, 1 figure, 1 table
Scientific paper
We present a microscopic theory of transport in quasi-periodically driven environments (`kicked rotors'), as realized in recent atom optic experiments. We find that the behavior of these systems depends sensitively on the value of Planck's constant $\tilde h$: for irrational values of $\tilde h/(4\pi)$ they fall into the universality class of disordered electronic systems and we derive the microscopic theory of the ensuing localization phenomena. In contrast, for rational values the rotor-Anderson insulator acquires an infinite (static) conductivity and turns into a `super-metal'. Signatures of the corresponding metal/super-metal transition are discussed.
Altland Alexander
Garst Markus
Tian Chushun
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