2018/06/30 by Andrea Dei, Alessandro Sfondrini
Physics and Astronomy · #hep-th
paper · pdf · doi:10.1007/jhep07(2018)109
46 pages, 3 figures, 9 tables; misprints corrected, references added
arxiv created 2019/02/07 · arxiv updated 2019/02/08
Building on arXiv:1804.01998 we investigate the integrable structure of the Wess-Zumino-Witten (WZW) model describing closed strings on AdS3× S3× T4. Using the recently-proposed integrable S matrix we show analytically that all wrapping corrections cancel and that the theory has a natural spin-chain interpretation. We construct the integrable spin chain and discuss its relation with the WZW description. Finally we compute the spin-chain spectrum in closed form and show that it matches the WZW prediction on the nose.