Dynamical ansatz for path integrals and nonperturbative trace formulas.
- Author(s): Dabaghian, Yuri A
- et al.
Published Web Locationhttp://link.aps.org/abstract/PRE/v60/p324
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.