Semiclassical calculation of the vibrational echo

W. G. Noid, Gregory S. Ezra, Roger F. Loring

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


For a thermal distribution of noninteracting anharmonic oscillators, the quantum echo response function differs from the classical mechanical limit in exhibiting recurrences and in the existence of a quantum mechanical frequency shift. Both of these effects are reproduced by the semiclassical approach. In a large system with dissipation, effectively irreversible dephasing processes can obscure the differences between classical and quantum calculations.

Original languageEnglish (US)
Pages (from-to)1491-1499
Number of pages9
JournalJournal of Chemical Physics
Issue number3
StatePublished - Jan 15 2004

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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