Collisional properties of weakly bound heteronuclear dimers

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dc.creatorMarcelis, B.
dc.creatorKokkelmans, S. J. J. M. F.
dc.creatorShlyapnikov, G. V.
dc.creatorPetrov, D. S.
dc.date2007-11-29
dc.date2008-03-15
dc.date.accessioned2026-07-07T09:26:41Z
dc.date.available2026-07-07T09:26:41Z
dc.descriptionWe consider collisional properties of weakly bound heteronuclear molecules (dimers) formed in a two-species mixture of atoms with a large mass difference. We focus on dimers containing light fermionic atoms as they manifest collisional stability due to an effective dimer-dimer repulsion originating from the exchange of the light atoms. In order to solve the dimer-dimer scattering problem we develop a theoretical approach, which provides a physically transparent and quantitative description of this four-atom system in terms of three- and two-body observables. We calculate the elastic scattering amplitude and the rates of inelastic processes such as the trimer formation and the relaxation of dimers into deeply bound molecular states. Irrespective of whether the heavy atoms are bosons or fermions, the inelastic rate can be significantly lower than the rate of elastic collisions. Moreover, the measurement of the inelastic rate which is a four-body observable, can be an efficient and precise tool for determining three-body observables such as the three-body parameter, positions of Efimov states and their lifetimes.
dc.description14 pages, 4 figures, published version
dc.identifierhttps://arxiv.org/abs/0711.4632
dc.identifierhttp://arxiv.org/abs/0711.4632
dc.identifierPhys. Rev. A 77, 032707 (2008)
dc.identifierdoi:10.1103/PhysRevA.77.032707
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/156837
dc.subjectStatistical Mechanics
dc.titleCollisional properties of weakly bound heteronuclear dimers
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