Conformal Gaussian Approximation

Details Conformal Gaussian Approximation Conformal Gaussian Approximation

2001-09-14

arxiv.org/abs/hep-th/0109118v2

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, 1 figure, missing figure added, figure caption corrected

Scientific paper

We present an alternative way to determine the unknown parameter associated to a gaussian approximation in a generic two-dimensional model. Instead of the standard variational approach, we propose a procedure based on a quantitative prediction of conformal invariance, valid for systems in the scaling regime, away from criticality. We illustrate our idea by considering, as an example, the sine-Gordon model. Our method gives a good approximation for the soliton mass as function of $\beta$.

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