On the singularities of the R–R AdS 3 × S 3 × T 4 S matrix
Olof Ohlsson Sax, Bogdan Stefański · Journal of Physics A Mathematical and Theoretical · 2020
Abstract We investigate the analytic properties of the exact magnon S matrix of string theory on AdS 3 × S 3 × T 4 with R–R flux. We show that the previously proposed dressing factors have the exact double-pole/zero structure expected from Landau box diagrams. This constitutes a strong consistency check of our dressing factors, much as the Dorey–Hofman–Maldacena poles do for the all-loop dressing factor in AdS 5 × S 5 .