Unifying gauge interaction and gravity in vector-like standard model

2002 
A supersymmetric vector-like standard model without leptons is suggested to investigate the unification between gauge interactions and gravity under two loop approximation for gauge interactions and one loop string correction for gravitation. It is found that two intermediate mass scales are needed where the lower mass scale may be accessible in laboratory in future and the higher mass scale is of the order of 10(16) GeV.
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