A super-Ohmic energy absorption in driven quantum chaotic systems
  We consider energy absorption by driven chaotic systems of the symplectic symmetry class. According to our analytical perturbative calculation, at the initial stage of evolution the energy growth with time can be faster than linear. This appears to be an analog of weak anti-localization in disordered systems with spin-orbit interaction. Our analytical result is also confirmed by numerical calculations for the symplectic quantum kicked rotor. 
A. Ossipov, D. M. Basko, and V. E. Kravtsov