Formation of ultracold Cs2 molecules through the double-minimum Cs2 3 1Σ+u state -: art. no. 013403

We present a simple model of ultracold cesium dimer formation in which the photoassociation into rovibrational levels of the double-minimum Cs-2 3 (1)Sigma(u)(+) state above its internal barrier enables spontaneous or stimulated emission into the,lowest rovibrational levels of the Cs-2 1 (X) (1)Sigma(g)(+) ground electronic state. The transition dipole moment should be sufficiently large for observation of such spectral transitions. The use of the Cs-2 3 (1)Sigma(u)(+) double-minimum potential could be extended to molecular Bose-Einstein condensates in which an optical trap can be employed for trapping of both atomic and molecular species.