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Phys. Rev. E 60, 324 - 334 (1999)

Dynamical ansatz for path integrals and nonperturbative trace formulas

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Yu. A. Dabaghian
Department of Physics, University of Rhode Island, Kingston, Rhode Island 02881

Received 17 December 1998

It is shown that a recently discovered representation of the Green’s function is equivalent to a certain “dynamical ansatz” for the corresponding path integral, which brings about a convenient method of nonperturbative approximations. Based on this observation, a set of nonperturbative approximations to the trace of the Green’s function is established.


©1999 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevE.60.324
DOI: 10.1103/PhysRevE.60.324
PACS: 05.45.Mt, 11.15.Tk, 03.65.Db

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