de Haas van Alphen oscillations for neutral atoms in electric fields
  In this work we study the de Haas van Alfhen (dHvA) effect for neutral atoms with a nonvanishing magnetic moment interacting with an electric field. Considering the particles confined in a two dimensional (2D) atomic cloud and using the Landau-Aharonov-Casher (LAC) theory, we obtain the effective magnetic field as well as the energy eigenfunctions and eigenvalues of the system. Assuming the neutral atoms as being $ ^{87}\mathrm{Rb} $ ultracold Rydberg atoms we calculate the degeneracy of the energy levels. Under a strong effective magnetic field regime we present the quantum oscillations in the energy and effective magnetization of the atomic gas. From the dHvA period we determine the area of the Fermi circle of the atomic cloud. 
B. Farias and Claudio Furtado
quant-ph