Eur. Phys. J. D 31, 301-306 (2004)
https://doi.org/10.1140/epjd/e2004-00164-5

Feshbach resonances in ²³Na–⁸⁷Rb

¹ Dept. of Physics and Astronomy, University of Rochester, Rochester, NY, USA
² Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
³ The Institute of Optics, University of Rochester, Rochester, NY, USA

Corresponding author: ^a nbig@lle.rochester.edu

Received: 6 August 2004
Published online: 23 November 2004

Abstract

We describe s-wave collisions between ultracold ²³Na and ⁸⁷Rb atoms in the presence of a magnetic field. For any collision input channel knowledge of the singlet and triplet intermolecular potentials [CITE] enables us to predict the variation in scattering lengths as a function of the magnetic field. We employ the Born-Oppenheimer approximation to predict several Feshbach resonances for ²³Na⁸⁷Rb. We also include a discussion of why these resonances are expected to be narrow as observed in the case of ⁸⁷Rb₂.