Title

Photoassociation of a cold-atom-molecule pair: Long-range quadrupole-quadrupole interactions

Authors

Authors

M. Lepers; O. Dulieu;V. Kokoouline

Comments

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Abbreviated Journal Title

Phys. Rev. A

Keywords

FREQUENCY-DEPENDENT POLARIZABILITIES; FOURIER-TRANSFORM-SPECTROSCOPY; WAALS DISPERSION COEFFICIENTS; INTRAMOLECULAR DEPENDENCE; RUBIDIUM; MOLECULES; ULTRACOLD ATOMS; STATE; ALKALI; LASER; GAS; Optics; Physics, Atomic, Molecular & Chemical

Abstract

The general formalism of the multipolar expansion of electrostatic interactions is applied to the calculation of the potential energy between an excited atom (without fine structure) and a ground-state diatomic molecule at large mutual separations. Both partners exhibit a permanent quadrupole moment so that their mutual long-range interaction is dominated by a quadrupole-quadrupole term, which is attractive enough to bind trimers. Numerical results are given for an excited Cs(6(2)P) atom and a ground-state Cs(2) molecule. The prospects for achieving photoassociation of a cold-atom-dimer pair are thus discussed and found promising. The formalism can be generalized to the long-range interaction between molecules to investigate the formation of cold tetramers.

Journal Title

Physical Review A

Volume

82

Issue/Number

4

Publication Date

1-1-2010

Document Type

Article

Language

English

First Page

8

WOS Identifier

WOS:000283290600008

ISSN

1050-2947

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