Quasiresonant energy transfer in ultracold atom-diatom collisions

Robert C. Forrey, N. Balakrishnan, A. Dalgarno, Michael R. Haggerty, Eric J. Heller

Research output: Contribution to journalArticlepeer-review

93 Scopus citations


Quantum and classical quasiresonant vibration-rotation energy transfer is investigated for ultracold He-H2 collisions. Classical trajectory computations show that extremely strong correlations between Δj and Δv persist at low energies, though the changes themselves are less than one quantum. Quantum computations show that quasiresonant transitions occur in the limit of zero collision energy but that threshold effects become important and that some quasiresonant channels close. The qualitative similarity between classical and quantum results suggests that they share a common mechanism.

Original languageEnglish (US)
Pages (from-to)2657-2660
Number of pages4
JournalPhysical review letters
Issue number13
StatePublished - 1999

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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