Enhanced Gauge Symmetry in M-Theory

Abstract

In this article we examine some points in the moduli space of M-Theory at which there arise enhanced gauge symmetries. In particular, we examine the ``trivial" points of enhanced gauge symmetry in the moduli space of M-Theory on $S^1\times S^1/{\mathbf{Z}}_2$ as well as the points of enhanced gauge symmetry in the moduli space of M-Theory on $K3$ and those in the moduli space of M-Theory on $T^5/{\mathbf{Z}}_2\times S^1$. Also, we employ the above enhanced gauge symmetries to derive the existence of some points of enhanced gauge symmetry in the moduli space of the Type IIA string theory.

29 Pages, 1 Postscript Figure, Uses harvmac.tex and epsf.tex