Interface line operators in $$ \mathcal{N}=4 $$ SYM theories and supersymmetric indices
Abstract
A bstract We study configurations of two $$ \mathcal{N}=4 $$ N = 4 super Yang-Mills theories of unitary gauge groups connected by the BPS interfaces involving line operators. We find strong evidence of S-duality of the configurations as precise matching of the line defect half-indices which enumerate the BPS local operators at the junctions of the interfaces and line operators. The interface line defect half-indices are expressible as intriguing closed-form formulae involving the q -binomial coefficients and the principal specializations of the Schur functions.
Fields of Study & Subjects
Black Holes and Theoretical Physics
Algebraic structures and combinatorial models
Quantum Chromodynamics and Particle Interactions
Publication details
- Journal / source
- Journal of High Energy Physics
- Volume
- 2026
- Issue
- 2
- Publication date
- 9 February 2026
- Language
- EN