String Effects in the Wilson Loop: a high precision numerical test

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.

19 pages, LaTeX file + two .eps figures

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• A numerical study of confinement in compact QED
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• A numerical study of a confined $Q\bar{Q}$ system in compact U(1) lattice gauge theory in 4D
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• Mathematical structure of three - dimensional (3D) Ising model
• The Width of the Color Flux Tube at 2-Loop Order
• Linear broadening of the confining string in Yang-Mills theory at low temperature
• Random percolation as a gauge theory
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• Thermal Operators in Ising Percolation
• Large center vortices and confinement in 3D Z(2) gauge theory
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• Confining Strings at High Temperature
• QCD-Like Behaviour of High-Temperature Confining Strings
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• What we do understand of Colour Confinement
• Some universal properties of the string breaking
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• Lattice QCD and String Theory
• Finite-temperature topological transitions in the presence of quenched uncorrelated disorder
• Percolating cluster of center vortices and confinement