Interacting electrons in magnetic fields: Tracking potentials and Jastrow-product wave functions

摘要

dThe Schrodinger equation for an interacting spinless electron gas in a nonuniform magnetic field admits an exact solution in Jastrow product form when the fluctuations in the magnetic field track the fluctuations in the scalar potential..Fbr tracking realizations in a two-dimensional electron gas, the degeneracy of the lowest Landau level persists and the "tracking" solutions span the ground state subspace. In the context of the fractional quantum Hall problem, the Laughlin wave function is shown to be a tracking solution. Tracking solutions for screened Coulomb interactions are also constructed. The resulting wave functions are proposed as variational wave functions with potentially lower energy in the case of non-negligible Landau level mixing than the Laughlin function. [S0163-1829(98)00627-4]. [References: 25]