Tunnel splittings for one dimensional potential wells revisited

Details Tunnel splittings for one dimensional potential wells revisited Tunnel splittings for one dimensional potential wells revisited

2000-03-08

arxiv.org/abs/cond-mat/0003115v1

Amer. J. Phys. 68, 430 (2000)

Physics

Condensed Matter

Revtex; 1 ps figure

Scientific paper

10.1119/1.19458

The WKB 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 the 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 text book by Landau and Lifshitz is amended so as to apply to the ground and low lying excited states.

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