RNS model from a new angle for strings charged under the Maximal Gauge Symmetry of the Standard model

Abstract

We consider the RNS model from a new angle. The longitudinal and time components of the world-sheet fermions add a $U(1)$ charge to a state. Unlike the gauginos, the ground state fermions in the open string sector are complex; spinor representations of $SU(3)_C\otimes SU(2)_L\otimes U(1)_{Y_W}$.