Strings on NS-NS backgrounds as integrable deformations

By M. Baggio, Alessandro Sfondrini. Physical Review D, 2018

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We consider the worldsheet S matrix of superstrings on an AdS3xS3xT4 NS-NS background in uniform light-cone gauge. We argue that scattering is given by a CDD factor that is non-trivial only between opposite-chirality particles, yielding a spin-chain-like Bethe Ansatz. Our proposal reproduces the spectrum of non-protected states computed from the Wess-Zumino-Witten description and the perturbative tree-level S matrix. This suggests that the model is an integrable deformation of a free theory similar to those arising from the T-Tbar composite operator.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/d52bc1ca95e1e38306c5f85e3b363f8875d8e326