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

TL;DR

This paper offers a novel perspective on the RNS string model, focusing on the U(1) charge contributions of world-sheet fermions and their implications for Standard Model gauge symmetries.

Contribution

It introduces a new angle for analyzing the RNS model by examining the U(1) charges of world-sheet fermions related to Standard Model gauge groups.

Findings

Longitudinal and time components of fermions add U(1) charge.

Ground state fermions are complex spinors of the Standard Model gauge group.

New insights into string states charged under maximal gauge symmetry.

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 $SU(3)_C\otimes SU(2)_L\otimes U(1)_{Y_W}$.