Non-perturbative Enhanced Gauge Symmetries in the Gimon-Polchinski Orientifold
Dileep P. Jatkar
Abstract
We study the enhanced gauge symmetries at constant couplings in the moduli space of the Gimon-Polchinski Orientifold. We show that whenever there is a singularity of E6, E7 and E8 type we get enhanced gauge symmetry U(5), U(6) and U(8) respectively. This is due to the additional twisting involved in the definition of the Gimon-Polchiniski orientifold.
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