Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2006-01-16
JHEP0602:054,2006
Physics
High Energy Physics
High Energy Physics - Theory
1+31 pages, 3 figures, references added, typos corrected, discussion on constraints and free parameters in spin-chain analysis
Scientific paper
10.1088/1126-6708/2006/02/054
We consider the correspondence between the spinning string solutions in Lunin-Maldacena background and the single trace operators in the Leigh-Strassler deformation of N=4 SYM. By imposing an appropriate rotating string ans\"atz on the Landau-Lifshitz reduced sigma model in the deformed SU(2) sector, we find two types of `elliptic' solutions with two spins, which turn out to be the solutions associated with the Neumann-Rosochatius system. We then calculate the string energies as functions of spins, and obtain their explicit forms in terms of a set of moduli parameters. On the deformed spin-chain side, we explicitly compute the one-loop anomalous dimensions of the gauge theory operators dual to each of the two types of spinning string solutions, extending and complementing the results of hep-th/0511164. Moreover, we propose explicit ans\"atze on how the locations of the Bethe strings are affected due to the deformation, with several supports from the string side.
Chen Heng-Yu
Okamura Keisuke
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