Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 27: Kalte Moleküle II (gemeinsam mit MO)
Q 27.2: Vortrag
Dienstag, 20. März 2007, 14:30–14:45, 6B
Molecular fine structure of strong dipolar molecules — •J. Deiglmayr, M. Aymar, and O. Dulieu — Laboratoire Aimé Cotton, CNRS, Bâtiment 505, Campus d’Orsay, 91405 Orsay Cedex, France
Recently the production of ultracold heteronuclear molecules in their electronic ground state either via photoassociation [1] or Feshbach resonances [2] has been achieved. Such heteronuclear molecules, if deeply bound, have a significant permanent electric dipole moment leading to strong, long-range, and alignment dependent intermolecular forces, which offer control by external electromagnetic fields. We have calculated the R-dependent polarizabilities for all heteronuclear dimers in the ground state using quantum chemistry methods [3]. We also follow a new approach to include spin-orbit coupling in ab-initio calculations of molecular potentials: a full configuration interaction calculation with effective core potentials and a diabatization procedure is used to determine potential curves with fine structure. These new insights will be used to find efficient routes to produce and stabilize polar molecules, to model the dynamics of a dipolar gas in an optical dipole trap and to explore external field dependent scattering properties.
[1] A Kerman et al., PRL 92 (2004) 153001; D Wang et al., PRL 93 (2004) 243005; MW Mancini et al., PRL 92 (2004) 133203; C Haimberger et al., PRA 70 (2004) 021402(R); SD Kraft et al., J. Phys B 39 (2006) S993
[2] C. Ospelkaus et al, PRL 97 (2006) 120402
[3] M. Aymar, O. Dulieu, J.Chem.Phys 122 (2005) 204302
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