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arXiv · 0909.4272

The 1/2 BPS 't Hooft loops in N=4 SYM as instantons in 2d Yang-Mills

Simone Giombi·Vasily Pestun
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Abstract

We extend the recent conjecture on the relation between a certain 1/8 BPS subsector of 4d N=4 SYM on S^2 and 2d Yang-Mills theory by turning on circular 1/2 BPS 't Hooft operators linked with S^2. We show that localization predicts that these 't Hooft operators and their correlation functions with Wilson operators on S^2 are captured by instanton contributions to the partition function of the 2d Yang-Mills theory. Based on this prediction, we compute explicitly correlation functions involving the 't Hooft operator, and observe precise agreement with S-duality predictions.

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Simone Giombi, Vasily Pestun. 2009-09-23. The 1/2 BPS 't Hooft loops in N=4 SYM as instantons in 2d Yang-Mills. https://arxiv.org/abs/0909.4272

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