Holography with Ramond-Ramond fluxes

TL;DR

This paper investigates the influence of Ramond-Ramond fluxes on holography within the IIB string framework, revealing simplifications in the worldsheet theory and enabling spectrum computations in non-commutative open string theories.

Contribution

It demonstrates that RR fluxes do not affect certain worldsheet states, simplifies spectrum calculations, and proposes methods to identify exactly solvable closed string backgrounds.

Findings

Worldsheet theory with only left or right movers ignores RR fluxes.

Computed part of the strong coupling spectrum of 2D NCOS theory.

Reproduced closed string action in PP-wave background.

Abstract

Starting from the non-linear sigma model of the IIB string in the light-cone gauge, we analyze the role of RR fluxes in Holography. We find that the worldsheet theory of states with only left or right moving modes does not see the presence of RR fields threading a geometry. We use this significant simplification to compute part of the strong coupling spectrum of the two dimensional NCOS theory. We also reproduce the action of a closed string in a PP-wave background using this general formalism; and we argue for various strategies to find new systems where the closed string theory may be exactly solvable.