Supersymmetric Wilson loops

Details Supersymmetric Wilson loops Supersymmetric Wilson loops

2002-05-15

arxiv.org/abs/hep-th/0205160v4

Nucl.Phys. B643 (2002) 157-171

Physics

High Energy Physics

High Energy Physics - Theory

16 pages; v2: misprints corrected; v3: comments on superconformal invariance and a reference added, version to be published in

Scientific paper

10.1016/S0550-3213(02)00693-4

I construct 1/16, 1/8 and 1/4 BPS Wilson loops in N=4 supersymmetric Yang-Mills theory and argue that expectation values of 1/4 BPS loops do not receive quantum corrections. At strong coupling, non-renormalization of supersymmetric Wilson loops implies subtle cancellations in the partition function of the AdS string with special boundary conditions. The cancellations are shown to occur in the semiclassical approximation.

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