Ultralong Rydberg Cs${}_2$ Molecules Investigated by Combined ab initio Calculations and Perturbation Theory

Abstract

Vibrational properties of ultralong Rydberg Cs${}_2$ molecules are investigated on corresponding potential curves obtained by perturbation theory. The Rydberg Cs${}_2$ molecules are associated by a Rydberg Cs($nS/nP$) atom $(n=30-70)$ and a ground state Cs($6s$) atom. The starting point for the perturbation treatment of corresponding Rydberg molecular potential curves is to generate accurate atomic Rydberg states from realistic {\it ab initio} effective core potential. The calculated results have similar characteristics with available experimental and theoretical investigations on Rydberg Rb${}_2$ molecules. And this is the first time that Rydberg molecules are studied at the {\it ab initio} level.

References in corpus (6)

• Observation of blue-shifted ultralong-range Cs${}_2$ Rydberg molecules
• Alignment of D-state Rydberg molecules
• Photoassociation of long-range $nD$ Rydberg molecules
• Excitation of weakly-bound molecules to trilobite-like Rydberg states
• Experimental verification of minima in excited long-range Rydberg states of Rb_2
• Ultralong-range Rydberg molecules in combined electric and magnetic fields