Born-oppenheimer revisited

Y. Aharonov, E. Ben-Reuven, S. Popescu, D. Rohrlich

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


An algebraic approach to solving degenerate perturbation theory is exhibited. This approach is used to solve the canonical Berry phase problem in the Born-Oppenheimer approximation, as well as the analogous classical problem. The show variables need not commute. Non-abelian phases and field theory anomalies are treated as examples. A non-adiabatic extension is suggested.

Original languageEnglish
Pages (from-to)818-830
Number of pages13
JournalNuclear Physics B
Issue number3
StatePublished - 25 Feb 1991
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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