Anisotropic interactions in electric field polarized ultracold Rydberg gases

We calculate pair potential curves for interacting Rydberg atoms in a constant electric field and use them to determine the effective C-3 dipole?dipole and C-6 van der Waals coefficients. We compare the C-3 and C-6 with experiments where the angle of a polarizing electric field is varied with respect to the axis of a quasi-1-dimensional trap at ultracold temperatures. The dipoles produced via polarization of the atoms have an angular dependent dipole?dipole interaction. We focus on the interaction potential of two rubidium Rydberg atoms in 50S1/2更多