Asymptotic approximations to the energy of dispersion interaction between rubidium atoms in Rydberg states

Abstract

Irreducible components determining the dependence of the van der Waals coefficient C nlJM 6 ( ) on the angle θ between the interatomic and the quantisation axes of two Rb atoms in their identical Rydberg states nlJMñ | are evaluated with account of the most contributing terms of the spectral resolution for the bi-atomic Green's function. Asymptotic polynomials in powers of the Rydberg-state principal quantum number n are derived for the C 6 irreducible components. Numerical values of the polynomial coefficients are determined for Rb atoms in their n S

Waveguide-induced dispersion interaction between two two-level atoms with orthogonal in-transverse-plane dipoles

“…A large number of studies have been carried out for the dispersion interaction between two atoms in a bulk medium [1][2][3][4], the dispersion interaction of a single atom with a macroscopic body [2,4], and the effects of macroscopic external boundaries on two-body dispersion potentials [5][6][7][8][9]. The dispersion interaction of highly excited (Rydberg) atoms has also been investigated [9][10][11].…”