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High Energy Physics - Lattice

Title: Numerical Quantum Field Theory on the Continuum and a New Look at Perturbation Theory

Abstract: The Source Galerkin method finds approximate solutions to the functional differential equations of field theories in the presence of external sources. While developing this process, it was recognized that approximations of the spectral representations of the Green's functions by Sinc function expansions are an extremely powerful calculative tool. Specifically, this understanding makes it not only possible to apply the Source Galerkin method to higher dimensional field theories, but also leads to a new approach to perturbation theory calculations in scalar and fermionic field theories. This report summarizes the methodologies for solving quantum field theories with the Source Galerkin method and for performing perturbation theory calculations using Sinc approximations.
Comments: Lattice2001(theorydevelop)
Subjects: High Energy Physics - Lattice (hep-lat)
DOI: 10.1016/S0920-5632(01)01914-4
Report number: Brown-HET-1290
Cite as: arXiv:hep-lat/0110203
  (or arXiv:hep-lat/0110203v1 for this version)

Submission history

From: Pinar Emirdag [view email]
[v1] Thu, 25 Oct 2001 15:03:23 GMT (6kb)