We propose dressing factors for massive excitations in AdS3 × S3 × S3 × S1, indicating compatibility with crossing and unitarity.
A bstract We propose dressing factors for massive excitations of the worldsheet S matrix of AdS 3 × S 3 × S 3 × S 1 supported by mixed Ramond-Ramond and Neveu-Schwarz-Neveu-Schwarz flux, in the “string” and “mirror” kinematics. Our proposal is compatible with crossing and unitarity, and it reproduces the available perturbative results for any ratio of the two three-spheres’ radii.
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Frolov et al. (2026) studied this question.
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