Vacuum Structure and Spectrum ofN=2SupersymmetricSU(n)Gauge Theory

We present an exact description of the metric on the moduli space of vacua and the spectrum of massive states for four dimensional $N=2\mathrm{}$ supersymmetric $\mathrm{SU}\left(n\right)$ gauge theories. The moduli space of quantum vacua is identified with the moduli space of a special set of genus $n-1\mathrm{}$ hyperelliptic Riemann surfaces.