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dc.creatorKotochigova, S
dc.date.accessioned2021-02-07T17:43:16Z
dc.date.available2021-02-07T17:43:16Z
dc.date.issued2010-07-29
dc.identifier.issn1367-2630
dc.identifier.issn1367-2630
dc.identifier.doihttp://dx.doi.org/10.34944/dspace/6035
dc.identifier.other642RI (isidoc)
dc.identifier.urihttp://hdl.handle.net/20.500.12613/6053
dc.description.abstractProgress in ultracold experiments with polar molecules requires a clear understanding of their interactions and reactivity at ultralow collisional energies. Two important theoretical steps in this process are the characterization of interaction potentials between molecules and the modeling of the reactive scattering mechanism. Here, we report on the ab initio calculation of isotropic and anisotropic van der Waals interaction potentials for polar KRb and RbCs colliding with each other or with ultracold atoms. Based on these potentials and two short-range scattering parameters, we then develop a single-channel scattering model with flexible boundary conditions. Our calculations show that, at low temperatures (and in the absence of an external electric field), the reaction rates between molecules or between molecules and atoms have a resonant character as a function of the short-range parameters. We also find that both the isotropic and anisotropic van der Waals coefficients have significant contributions from dipóle coupling to excited electronic states. Their values can differ dramatically from those solely obtained from the permanent dipóle moment. A comparison with recently obtained reaction rates of fermionic 40K87Rb shows that the experimental data cannot be explained by a model where the short-range scattering parameters are independent of the relative orbital angular momentum or partial wave. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
dc.format.extent073041-073041
dc.relation.haspartNew Journal of Physics
dc.relation.isreferencedbyIOP Publishing
dc.subjectphysics.atom-ph
dc.subjectphysics.atom-ph
dc.subjectquant-ph
dc.titleDispersion interactions and reactive collisions of ultracold polar molecules
dc.typeArticle
dc.type.genreJournal Article
dc.relation.doi10.1088/1367-2630/12/7/073041
dc.ada.noteFor Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu
dc.date.updated2021-02-07T17:43:13Z
refterms.dateFOA2021-02-07T17:43:16Z


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