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arXiv · 1211.5119

A dynamic su(1|1)^2 S-matrix for AdS3/CFT2

Riccardo Borsato·Olof Ohlsson Sax·Alessandro Sfondrini
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Abstract

We derive the S-matrix for the d(2,1;alpha)^2 symmetric spin-chain of AdS3/CFT2 by considering the centrally extended su(1|1)^2 algebra acting on the spin-chain excitations. The S-matrix is determined uniquely up to four scalar factors, which are further constrained by a set of crossing relations. The resulting scattering includes non-trivial processes between magnons of different masses that were previously overlooked.

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Riccardo Borsato, Olof Ohlsson Sax, Alessandro Sfondrini. 2013-04-25. A dynamic su(1|1)^2 S-matrix for AdS3/CFT2. https://doi.org/10.1007/jhep04(2013)113

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