On the absence of reflection in AdS 4/CFT 3

Abstract

A noteworthy feature of the S-matrix which has been proposed for AdS 4/CFT 3 is that the scattering of an A-particle ("soliton") with a B-particle ("antisoliton") is reflectionless. We argue, following Zamolodchikov, that the absence of reflection is a result of the existence of certain local conserved charges which act differently on the two types of particles. © SISSA 2010.