Tunnel splittings for one-dimensional potential wells revisited

Anupam Garg*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

96 Scopus citations


The Wentzel-Kramers-Brillouin and instanton answers for the tunnel splitting of the ground state in a symmetric double-well potential are both reduced to an expression involving only functionals of the potential, without the need for solving any auxilliary problems. This formula is applied to simple model problems. The prefactor for the splitting in the textbook by Landau and Lifshitz is amended so as to apply to the ground and low lying excited states.

Original languageEnglish (US)
Pages (from-to)430-437
Number of pages8
JournalAmerican Journal of Physics
Issue number5
StatePublished - May 2000

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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