This work investigates analytic torsion on the moduli space of degree
zero stable bundles on a compact Reimann surface. Zeta-function
regularization and perturbation-curvature formulas for torsion are
developed using a modified resolvent-Szego kernel. The author discusses
the bosonization formulas of mathematical physics. Riemann vanishing
theorems for torsion, and analytic properties (insertion-residue
formulas and heat equations) for the nonabelian theta function and Szego
kernel. In addition, he provides background material on bundle-moduli
spaces, Quillen metrics, and theta functions.