Sharp Spectral Asymptotics for two-dimensional Schrödinger operator with a strong degenerating magnetic field
arXiv:math/0603114
Abstract
I consider two-dimensional Schrödinger operator with degenerating magnetic field and in the generic situation I derive spectral asymptotics as and where and are Planck and coupling parameters respectively. The remainder estimate is which is between valid as magnetic field non-degenerates and valid as magnetic field is identically 0. As is close to its maximal reasonable value the principal part contains correction terms associated with short periodic trajectories of the corresponding classical dynamics.
79 pages