Gaussian approximation of the (2+1) dimensional Thirring model in the functional Schr\"odinger picture
Abstract
The (2+1)-dimensional Thirring model is studied by using the Gaussian approximation method in the functional Schr\"odinger picture. Although the dynamical symmetry breaking does not occur in the large N limit, it does occur in the Gaussian approximation which includes the higher order contributions in 1/N.
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