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A nonperturbative study of three-dimensional phi^4 theory

Mark Windoloski
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Abstract

The spherical field formalism---a nonperturbative approach to quantum field theory---was recently introduced and applied to phi^4 theory in two dimensions. The spherical field method reduces a quantum field theory to a finite-dimensional quantum mechanical system by expanding field configurations in terms of spherical partial wave modes. We extend the formalism to phi^4 theory in three dimensions and demonstrate the application of the method by analyzing the phase structure of this theory.

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Mark Windoloski. 2000-03-24. A nonperturbative study of three-dimensional phi^4 theory. https://arxiv.org/abs/hep-th/0002243

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