15 citations · 52 across the 10 of their papers we have counts for
Showing 2000 · hep-thShow all
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hep-th2000
Rank 48 gauge group in heterotic string
Andrea Gregori
We discuss the existence of a non-perturbative gauge sector that can raise the rank of the gauge group of the N_4=2 heterotic string up to 48. These gauge bosons, that don't exist…
hep-th2000
Weak Scale in Heterotic String
Andrea Gregori
We investigate the possibility of lowering the string scale in four dimensional heterotic models possessing a non-perturbative extension of the gauge group. In particular, we consi…
hep-th2000
Non-perturbative string connections
Andrea Gregori
We discuss the duality between two type I compactifications to four dimensions and an heterotic construction with spontaneous breaking of the N=4 supersymmetry to N=2. This duality…