The eigenvalues of stochastic blockmodel graphs

We derive the limiting distribution for the largest eigenvalues of the adjacency matrix for a stochastic blockmodel graph when the number of vertices tends to infinity. We show that, in the limit, these eigenvalues are jointly multivariate normal with bounded covariances. Our result extends the classic result of F"uredi and Koml'os on the fluctuation of the largest eigenvalue for ErdHos-R'enyi graphs.