String Effects in the Wilson Loop: a high precision numerical test
M. Caselle, R. Fiore, F. Gliozzi, M. Hasenbusch, P. Provero
Abstract
We test numerically the effective string description of the infrared limit of lattice gauge theories in the confining regime. We consider the 3d Z(2) lattice gauge theory, and we define ratios of Wilson loops such that the predictions of the effective string theory do not contain any adjustable parameters. In this way we are able to obtain a degree of accuracy high enough to show unambiguously that the flux--tube fluctuations are described, in the infrared limit, by an effective bosonic string theory.
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