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I was watching Nima's very popular talk (download if you're using chrome) (also mirrored at...
Does fixing the reparameterization invariance of the string action correspond to some kind of orbifolding
Does fixing the reparameterisation invariance of the string action, for example by choosing the...
It is well known the existence of a T-Duality between the two Heterotic String Theories, Type HO...