Seiberg-Witten curve via generalized matrix model

We study the generalized matrix model which corresponds to the n -point toric Virasoro conformal block. This describes four-dimensional gauge theory with circular quiver diagram by the AGT relation. We first verify that the generalized matrix model is obtained from the perturbative calculation of the Liouville correlation function. We then derive the Seiberg-Witten curve for gauge theory as a spectral curve of the generalized matrix model.