Compute the lowest Regge trajectory with the pure-RR quantum spectral curve

Compute the scaling dimension of the lowest Regge trajectory state in pure-Ramond–Ramond-flux type IIB string theory on AdS3×S3×T4 using the conjectured pure-RR quantum spectral curve, thereby enabling a direct comparison with the worldsheet-bootstrap prediction.

Background

The paper discusses a quantum spectral curve conjectured for the pure-RR AdS3×S3×T4 background. Strong-coupling numerical data had been obtained for a family of states with odd spin and nontrivial SU(2)×SU(2) quantum numbers, but the lowest Regge trajectory state studied through the worldsheet bootstrap had not yet been treated with the QSC.

Resolving this problem would provide a direct comparison between the QSC and worldsheet-bootstrap descriptions of the same pure-RR string state. The present paper instead computes the lowest Regge trajectory scaling dimension through string field theory combined with a mixed-flux ansatz, and uses the pure-RR QSC result for a different family of states as a consistency check.