On mixed-flux worldsheet scattering in AdS3/CFT2

TL;DR

This paper investigates the quantum integrability of strings in AdS3xS3xT4 with mixed flux, focusing on the S matrix and dressing factors, especially in the relativistic limit, to deepen understanding of the model's properties.

Contribution

It completes the bootstrap program for the S matrix in mixed-flux theories, including dressing factors, and offers new insights into the model at low NSNS flux levels.

Findings

Completed the bootstrap for the S matrix including dressing factors.

Provided new insights into the model's behavior with low NSNS flux.

Validated the quantum integrability of the mixed-flux string theory.

Abstract

Strings on AdS3xS3xT4 with mixed Ramond-Ramond and Neveu-Schwarz-Neveu-Schwarz flux are known to be classically integrable. This is a crucial property of this model, which cannot be studied by conventional worldsheet-CFT techniques. Integrability should carry over to the quantum level, and the worldsheet S matrix in the lightcone gauge is known up to the so-called dressing factors. In this work we study the kinematics of mixed-flux theories and consider a relativistic limit of the S matrix whereby we can complete the bootstrap program, including the dressing factors for fundamental particles and bound states. This provides an important test for the dressing factors of the full worldsheet model, and offers new insights on the features of the model when the amount of NSNS flux is low.