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자연과학대학
물리학전공
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Twisted Bethe equations from a twisted S-matrix
Title
Twisted Bethe equations from a twisted S-matrix
Authors
Ahn C.
;
Bajnok Z.
;
Bombardelli D.
;
Nepomechie R.I.
Ewha Authors
안창림
SCOPUS Author ID
안창림
Issue Date
2011
Journal Title
Journal of High Energy Physics
ISSN
1126-6708
Citation
Journal of High Energy Physics vol. 2011, no. 2
Indexed
SCOPUS
Document Type
Article
Abstract
All-loop asymptotic Bethe equations for a 3-parameter deformation of AdS 5/CFT 4 have been proposed by Beisert and Roiban. We propose a Drinfeld-Reshetikhin twist of the AdS 5/CFT 4 S-matrix, together with c-number diagonal twists of the boundary conditions, from which we derive these Bethe equations. Although the undeformed S-matrix factorizes into a product of two su(2|2) factors, the deformed S-matrix cannot be so factored. Diagonalization of the corresponding transfer matrix requires a generalization of the conventional algebraic Bethe ansatz approach, which we first illustrate for the simpler case of the twisted su(2) principal chiral model. We also demonstrate that the transfer matrix is spectrally equivalent to a transfer matrix which is constructed using instead untwisted S-matrices and boundary conditions with operatorial twists. © SISSA 2011.
DOI
10.1007/JHEP02(2011)027
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