Worldsheet scattering for the GKP string
High Energy Physics - Theory
2016-01-27 v1
Abstract
We initiate the perturbative study of the S-matrix for the excitations on top of the GKP vacuum at strong coupling. Using the string sigma model action expanded around the null cusp classical solution, we compute the tree-level S-matrix elements and compare them with the predictions from the asymptotic Bethe Ansatz. We also check the factorization of the three-body S-matrix for various bosonic processes, finding precise agreement with the constraints imposed by integrability.
Keywords
Cite
@article{arxiv.1508.07331,
title = {Worldsheet scattering for the GKP string},
author = {Lorenzo Bianchi and Marco S. Bianchi},
journal= {arXiv preprint arXiv:1508.07331},
year = {2016}
}
Comments
33 pages, 13 figures