Comments on the Boundary Scattering Phase
arXiv:0712.1361 · doi:10.1088/1126-6708/2008/02/028
Abstract
We present a simple solution to the crossing equation for an open string worldsheet reflection matrix, with boundaries preserving a SU(1|2)^2 residual symmetry, which constrains the boundary dressing factor. In addition, we also propose an analogous crossing equation for the dressing factor where extra boundary degrees of freedom preserve a SU(2|2)^2 residual symmetry.
14 pages, 2 figures; v2: affiliation corrected