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arXiv · 1908.01724

Large-size expansion for triangular Wilson loops in confining gauge theories

P. V. Pobylitsa
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Abstract

The asymptotic behavior of Wilson loops in the large-size limit ($L\rightarrow\infty$) in confining gauge theories with area law is controlled by effective string theory (EST). The $L^{-2}$ term of the large-size expansion for the logarithm of Wilson loop appears within EST as a two-loop correction. Ultraviolet divergences of this two-loop correction for polygonal contours can be renormalized using an analytical regularization constructed in terms of Schwarz-Christoffel mapping. In the case of triangular Wilson loops this method leads to a simple final expression for the $L^{-2}$ term.

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P. V. Pobylitsa. 2019-12-23. Large-size expansion for triangular Wilson loops in confining gauge theories. https://doi.org/10.1007/jhep04(2020)204

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