Systematically accelerated convergence of path integrals.
We present a new analytical method that systematically improves the convergence of path integrals of a generic N-fold discretized theory. Using it we calculate the effective actions S(p) for p< or =9, which lead to the same continuum amplitudes as the starting action, but that converge to that continuum limit as 1/N(p). We checked this derived speedup in convergence by performing Monte Carlo simulations on several different models.
Bogojević
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Institute of Physics, P.O. Box 57, 11001 Belgrade, Serbia and Montenegro.
Balaz
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Belić
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