Comment on "Feynman Effective Classical Potential in the Schrodinger Formulation"

Abstract

We comment on the paper "Feynman Effective Classical Potential in the Schrodinger Formulation"[Phys. Rev. Lett. 81, 3303 (1998)]. We show that the results in this paper about the time evolution of a wave packet in a double well potential can be properly explained by resorting to a variational principle for the effective action. A way to improve on these results is also discussed.

1 page, 2eps figures, Revtex

References in corpus (3)

• The Feynman effective classical potential in the Schrödinger formulation
• Wegner-Houghton equation and derivative expansion
• Flow Equations for U_k and Z_k

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