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  The su(2|3) Dynamic Spin Chain

Beisert, N. (2004). The su(2|3) Dynamic Spin Chain. Nuclear Physics B682 (2004) 487-520, 682, 487-520.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-50F7-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-50F8-2
Genre: Journal Article

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60950.pdf (Preprint), 417KB
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 Creators:
Beisert, Niklas1, Author              
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1Duality & Integrable Structures, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24016              

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 Abstract: The complete one-loop, planar dilatation operator of the N=4 superconformal gauge theory was recently derived and shown to be integrable. Here, we present further compelling evidence for a generalisation of this integrable structure to higher orders of the coupling constant. For that we consider the su(2|3) subsector and investigate the restrictions imposed on the spin chain Hamiltonian by the symmetry algebra. This allows us to uniquely fix the energy shifts up to the three-loop level and thus prove the correctness of a conjecture in hep-th/0303060. A novel aspect of this spin chain model is that the higher-loop Hamiltonian, as for N=4 SYM in general, does not preserve the number of spin sites. Yet this dynamic spin chain appears to be integrable.

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Language(s): eng - English
 Dates: 2004
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: eDoc: 60950
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Title: Nuclear Physics B682 (2004) 487-520
Source Genre: Journal
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Pages: - Volume / Issue: 682 Sequence Number: - Start / End Page: 487 - 520 Identifier: -