Integrability, spin-chains and the AdS3/CFT2 correspondence
Integrability, spin-chains and the AdS3/CFT2 correspondence
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可积性、自旋链和 AdS3/CFT2 对应关系
DOI:
10.1007/jhep08(2011)029
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发表时间:
2011
影响因子:
5.4
通讯作者:
Sax O
中科院分区:
文献类型:
--
作者:
Sax O
Building on arXiv: 0912.1723 [1], 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× S 3× S 3× S 1, with symmetry d (2, 1; α) 2, valid for all values of α. This construction requires an α-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× S 3× 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× S 3× S 3× S 1. We show that, in the α→ 1 limit, the integrable structure of the d (2, 1; α) 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.
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DOI:
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DOI:
--
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期刊:
影响因子:
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作者:
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