Wilson Loops of Anti-symmetric Representation and D5-branes
Satoshi Yamaguchi
TL;DR
The paper identifies the AdS/CFT dual of circular Wilson loops in the rank-$k$ antisymmetric representation by constructing an AdS$_2\times$S$^4$ D5-brane with electric flux in AdS$_5\times$S$^5$. The holographic calculation of the on-shell action, including careful boundary terms, yields $S_{\rm tot}=-\sqrt{\lambda}\frac{2N}{3\pi}\sin^3\theta_k$ with $k=\frac{2N}{\pi}\left(\tfrac{1}{2}\theta_k-\tfrac{1}{4}\sin 2\theta_k\right)$, matching the semiclassical limit of the Gaussian matrix model for the antisymmetric representation. The analysis shows that the AdS$_2\times$S$^4$ D5-brane preserves the same half of supersymmetry as the AdS$_2\times$S$^2$ D3-brane, supporting the proposed operator-brane correspondence. Together, these results reinforce the brane realization of Wilson loops in higher representations and connect to bubbling geometries in the AdS/CFT framework.
Abstract
We use a D5-brane with electric flux in AdS_5 x S^5 background to calculate the circular Wilson loop of anti-symmetric representation in N=4 super Yang-Mills theory in 4 dimensions. The result agrees with the Gaussian matrix model calculation.
