A nonperturbative study of three-dimensional phi4 theory
Abstract
The spherical field formalism---a nonperturbative approach to quantum field theory---was recently introduced and applied to phi4 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 phi4 theory in three dimensions and demonstrate the application of the method by analyzing the phase structure of this theory.
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