An improved AFS phase for AdS 3 string integrability

Michael C. Abbott, Inês Aniceto
2015 Physics Letters B  
We propose a number of modifications to the classical term in the dressing phase for integrable strings in AdS3 x S3 x S3 x S1, and check these against existing perturbative calculations, crossing symmetry, and the semiclassical limit of the Bethe equations. The principal change is that the phase for different masses should start with a term Q_1 Q_2, like the one-loop AdS3 dressing phase, rather than Q_2 Q_3 as for the original AdS5 AFS phase.
doi:10.1016/j.physletb.2015.02.016 fatcat:274so6nowbgubdo2ioxqbs7mju