D-branes in PP-wave light cone string field theory

TL;DR

This paper constructs the cubic interaction vertex and supercharges for open strings on D7-branes in PP-wave light-cone superstring field theory, explicitly including zero modes and all string excitations.

Contribution

It provides a detailed construction of the interaction vertex and supercharges in PP-wave background, incorporating symmetry group structure and full string excitation spectrum.

Findings

Explicit form of the interaction vertex for zero modes

Extension to include all string excitations

Symmetry generators expressed in SU(2) x SU(2) x SO(2) x SO(2)

Abstract

The cubic interaction vertex and the dynamical supercharges are constructed for open strings ending on D7-branes, in light-cone superstring field theory in PP-wave background. In this context, we write down the symmetry generators in terms of the relevant group structure: SU(2) x SU(2) x SO(2) x SO(2), originating from the eight transverse directions in the PP-wave background and use the expressions to explicitly construct the vertex at the level of stringy zero modes. The results are further generalized to include all the stringy excitations as well.