BPS Wilson loops in generic conformal N=2 SU(N) SYM theories

Understand

We consider the 1/2 BPS circular Wilson loop in a generic N=2 SU(N) SYM theory with conformal matter content.

• We study its vacuum expectation value, both at finite $N$ and in the large-N limit, using the interacting matrix model provided by localization results.
• We single out some families of theories for which the Wilson loop vacuum expectation values approaches the N=4 result in the large-N limit, in agreement with the fact that they possess a simple holographic dual.
• At finite N and in the generic case, we explicitly compare the matrix model result with the field-theory perturbative expansion up to order g^8 for the terms proportional to the Riemann value zeta(5), finding perfect agreement.