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An Improved Gaussian Approximation for Quantum Field Theory

Antun Balaz·Aleksandar Belic·Aleksandar Bogojevic
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Abstract

We present a new approximation technique for quantum field theory. The standard one-loop result is used as a seed for a recursive formula that gives a sequence of improved Gaussian approximations for the generating functional. In a different setting, the basic idea of this recursive scheme is used in the second part of the paper to substantialy speed up the standard Monte Carlo algorithm.

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Antun Balaz, Aleksandar Belic, Aleksandar Bogojevic. 1998-04-30. An Improved Gaussian Approximation for Quantum Field Theory. https://arxiv.org/abs/hep-th/9804207

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