Integrability, spin-chains and the AdS(3)/CFT(2) correspondence
2011 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708, no 8, 29- p.Article in journal (Refereed) Published
Building on arXiv:0912.1723 , in this paper we investigate the AdS(3)/CFT(2) correspondence using integrability techniques. We present an all-loop Bethe Ansatz (BA) for strings on AdS(3) x S(3) x S(3) x S(1), with symmetry d(2, 1; alpha)(2), valid for all values of alpha. This construction requires an a-dependent scaling of the Zhukovsky map. We investigate the weakly-coupled limit of this BA and of the all-loop BA for strings on AdS(3) x S(3) x T(4). We construct integrable short-range spin-chains and Hamiltonians that correspond to these weakly-coupled BAs. The spin-chains are alternating and homogenous, respectively. The alternating spin-chain can be regarded as giving some of the first hints about the unknown CFT(2) dual to string theory on AdS(3) x S(3) x S(3) x S(1). We show that, in the alpha -> 1 limit, the integrable structure of the d(2, 1; alpha)(2) model is non-singular and keeps track of not just massive but also massless modes. This provides a way of incorporating massless modes into the integrability machinery of the AdS(3)/CFT(2) correspondence.
Place, publisher, year, edition, pages
2011. no 8, 29- p.
Gauge-gravity correspondence, AdS-CFT Correspondence
IdentifiersURN: urn:nbn:se:uu:diva-160220DOI: 10.1007/JHEP08(2011)029ISI: 000294901400053OAI: oai:DiVA.org:uu-160220DiVA: diva2:448720