Analysis shows dressing factors are unitary and CP-invariant in string kinematics, indicating strong agreement with existing literature.
A bstract We follow up on our proposal for dressing factors for the mixed-flux AdS 3 × S 3 × T 4 background presented in [43]. We discuss in detail the analytic properties of the dressing factors in the string and mirror kinematics for fundamental massive particles and bound states. We prove that the dressing factors are unitary and CP-invariant in the string kinematics, parity invariant in the mirror, and solve the crossing equations in both kinematics. In the limit of pure Ramond-Ramond flux they reduce to the known ones. Finally, we present their expansion at strong tension, as well as in the (small-RR-flux) relativistic limit, finding agreement with the literature.
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Frolov et al. (2025) studied this question.
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