Accurate Effective Hamiltonians via Unitary Flow in Floquet Space

作者:Verdeny Albert*; Mielke Andreas; Mintert Florian
来源:Physical Review Letters, 2013, 111(17): 175301.
DOI:10.1103/PhysRevLett.111.175301

摘要

We present a systematic construction of effective Hamiltonians of periodically driven quantum systems. Because of an equivalence between the time dependence of a Hamiltonian and an interaction in its Floquet operator, flow equations, that permit us to decouple interacting quantum systems, allow us to identify time-independent Hamiltonians for driven systems. With this approach, we explain the experimentally observed deviation of expected suppression of tunneling in ultracold atoms.

  • 出版日期2013-10-22