Wilson Loops in N=2 Superconformal Yang-Mills Theory
arXiv:1007.4923 · doi:10.1007/JHEP09(2010)095
Abstract
We present a three-loop O(g^6) calculation of the difference between the expectation values of Wilson loops evaluated in N=4 and superconformal N=2 supersymmetric Yang-Mills theory with gauge group SU(N) using dimensional reduction. We find a massive reduction of required Feynman diagrams, leaving only certain two-matter-loop corrections to the gauge field and associated scalar propagator. This "diagrammatic difference" leaves a finite result proportional to the bare propagators and allows the recovery of the zeta(3) term coming from the matrix model for the 1/2 BPS circular Wilson loop in the N=2 theory. The result is valid also for closed Wilson loops of general shape. Comments are made concerning light-like polygons and supersymmetric loops in the plane and on S^2.
16 pages. v2 minor changes, to appear in JHEP. v3 corrected references
References in corpus (7)
- Supersymmetric Wilson loops on S^3
- More supersymmetric Wilson loops
- Wilson loops: From four-dimensional SYM to two-dimensional YM
- Loop operators and S-duality from curves on Riemann surfaces
- Correlators of supersymmetric Wilson-loops, protected operators and matrix models in N=4 SYM
- Gauge Theory Wilson Loops and Conformal Toda Field Theory
- Supersymmetric Wilson Loops in Diverse Dimensions