On large N solution of ABJM theory

We investigate the large N   limit of the expectation value W(λ)W(λ) of a BPS Wilson loop in ABJM theory, using an integral expression of the partition function obtained recently by Kapustin et al. Certain saddle-point equations provide the correct perturbative expansion of W(λ)W(λ). The large λ   behavior of W(λ)W(λ) is also obtained from the saddle-point equations. The result is consistent with AdS/CFT correspondence.