Rigid surface operators and S-duality: some proposals
arXiv:0901.1833 · doi:10.1088/1126-6708/2009/05/125
Abstract
We study surface operators in the N=4 supersymmetric Yang-Mills theories with gauge groups SO(n) and Sp(2n). As recently shown by Gukov and Witten these theories have a class of rigid surface operators which are expected to be related by S-duality. The rigid surface operators are of two types, unipotent and semisimple. We make explicit proposals for how the S-duality map should act on unipotent surface operators. We also discuss semisimple surface operators and make some proposals for certain subclasses of such operators.
27 pages. v2: minor changes, added reference
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