Angular-momentum couplings in long-range Rb${}_2$ Rydberg molecules

Abstract

We study angular-momentum couplings in ${}^{87}$Rb${}_2$ Rydberg molecules formed between Rydberg and 5S${}_{1/2}$ ground-state atoms. We use a Fermi model that includes S-wave and P-wave singlet and triplet scattering of the Rydberg electron with the 5S${}_{1/2}$ atom, along with the fine structure coupling of the Rydberg atom and hyperfine structure coupling of the 5S${}_{1/2}$ atom. We discuss the effects of these couplings on the adiabatic molecular potentials. We obtain bound-state energies, lifetimes, and electric and magnetic dipole moments for the vibrational ground states of the ${}^{87}$Rb$(n$D$+5$S${}_{1/2})$ molecules in all adiabatic potentials, with fine and hyperfine structure included. We also study the effect of the hyperfine structure on the deep ${}^3$S-wave- and ${}^3$P-wave-dominated adiabatic molecular potentials, which support high-$\ell$ ${}^{87}$Rb${}_2$ Rydberg molecules.

References in corpus (4)

• Ultracold atom-electron interaction: from two to many-body physics
• Alignment of D-state Rydberg molecules
• Photoassociation of long-range $nD$ Rydberg molecules
• Quantum-classical lifetimes of Rydberg molecules

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