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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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James F.E. Croft

Alisdair O.G. Wallis

Paul S. Julienne


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.


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.

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


Published Journal Article (828 Kb)

Copyright Statement
© 2011 American Physical Society

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