Superstring sigma models from spin chains: the SU(1,1|1) case

Details Superstring sigma models from spin chains: the SU(1,1|1) case Superstring sigma models from spin chains: the SU(1,1|1) case

2005-03-21

arxiv.org/abs/hep-th/0503159v2

Nucl.Phys. B729 (2005) 163-178

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, references added, minor corrections

Scientific paper

10.1016/j.nuclphysb.2005.09.012

We derive the coherent state representation of the integrable spin chain Hamiltonian with non-compact supersymmetry group G=SU(1,1|1). By passing to the continuous limit, we find a spin chain sigma model describing a string moving on the supercoset G/H, H being the stabilizer group. The action is written in a manifestly G-invariant form in terms of the Cartan forms and the string coordinates in the supercoset. The spin chain sigma model is shown to agree with that following from the Green-Schwarz action describing two-charged string spinning on AdS_5 x S^5.

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