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Multichannel quantum defect theory for cold molecular collisions

Croft, James F.E.; Wallis, Alisdair O.G.; Hutson, Jeremy M.; Julienne, Paul S.

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Authors

James F.E. Croft

Alisdair O.G. Wallis

Paul S. Julienne



Abstract

Multichannel quantum defect theory (MQDT) is shown to be capable of producing quantitatively accurate results for low-energy atom-molecule scattering calculations. With a suitable choice of reference potential and short-range matching distance, it is possible to define a matrix that encapsulates the short-range collision dynamics and is only weakly dependent on energy and magnetic field. Once this has been produced, calculations at additional energies and fields can be performed at a computational cost that is proportional to the number of channels N and not to N3. MQDT thus provides a promising method for carrying out low-energy molecular scattering calculations on systems where full exploration of the energy dependence and the field dependence is currently impractical.

Citation

Croft, J. F., Wallis, A. O., Hutson, J. M., & Julienne, P. S. (2011). Multichannel quantum defect theory for cold molecular collisions. Physical Review A, 84(4), Article 042703. https://doi.org/10.1103/physreva.84.042703

Journal Article Type Article
Publication Date Jan 1, 2011
Deposit Date Jun 19, 2013
Publicly Available Date Jun 27, 2013
Journal Physical Review A
Print ISSN 1050-2947
Electronic ISSN 1094-1622
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 84
Issue 4
Article Number 042703
DOI https://doi.org/10.1103/physreva.84.042703

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Published Journal Article (828 Kb)
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Copyright Statement
© 2011 American Physical Society





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