Role of the atom-atom scattering length and of symmetrization in unidimensional ultracold atom-diatom collisions

被引：0
作者：
G. Quéméner
P. Honvault
J. -M. Launay
机构：
[1] University of Rennes 1,Institut de Physique de Rennes, UMR CNRS 6251
[2] University of Franche-Comté,Institut UTINAM, UMR CNRS 6213
[3] University of Nevada Las Vegas,Department of Chemistry
来源：
The European Physical Journal D | 2008年 / 49卷
关键词：
34.50.-s Scattering of atoms and molecules; 34.50.Cx Elastic; ultracold collisions;
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摘要：
The role of the atom-atom scattering length and of the symmetrization in ultracold atom-diatom collisions in one dimension is presented. For an ultracold atom-diatom collision and for a diatomic molecule in its highest vibrational state, inelastic rate coefficients vanish for a system composed of fermionic atoms as the atom-atom scattering length increases whereas they do not for a system composed of bosonicatoms. The differences come from the symmetrization of the wavefunction of the systems. We explain these differences by comparing the shape of the effective potentials of the atom-diatom approach. For the fermionic system, we use a zero-range interaction to modelize the adiabatic energies and we give a lower estimate of the atom-diatom scattering length as a function of the atom-atom scattering length.
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页码：75 / 84
页数：9
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