Universal Four-Boson States in Ultracold Molecular Gases: Resonant Effects in Dimer-Dimer Collisions

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dc.creatorD'Incao, J. P.
dc.creatorvon Stecher, J.
dc.creatorGreene, Chris H.
dc.date2009-03-19
dc.date.accessioned2026-07-07T12:54:17Z
dc.date.available2026-07-07T12:54:17Z
dc.descriptionWe study the manifestations of universal four-body physics in ultracold dimer-dimer collisions. We show that resonant features associated with three-body Efimov physics and dimer-dimer scattering lengths are universally related. The emergence of universal four-boson states allows for the tunability of the dimer-dimer interaction, thus enabling the future study of ultracold molecular gases with both attractive and repulsive interactions. Moreover, our study of the interconversion between dimers and Efimov trimers shows that $B_{2}+B_{2}\to B_{3}+B$ rearrangement reactions can provide an efficient trimer formation mechanism. Our analysis of the temperature dependence of this reaction provides an interpretation of the available experimental data and sheds light on the possible experimental realization of rearrangement processes in ultracold gases.
dc.description4.1 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0903.3348
dc.identifierhttp://arxiv.org/abs/0903.3348
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223878
dc.subjectAtomic Physics
dc.titleUniversal Four-Boson States in Ultracold Molecular Gases: Resonant Effects in Dimer-Dimer Collisions
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