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Dynamical ansatz for path integrals and nonperturbative trace formulas.

  • Author(s): Dabaghian, Yuri A
  • et al.

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.

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