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#### Spinning strings in AdS_{5} x S^{5} and integrable systems

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##### Citation

Arutyunov, G., Frolov, S., Russo, J., & Tseytlin, A. A. (2003). Spinning strings
in AdS_{5} x S^{5} and integrable systems.* Nuclear Physics B,* *671*,
3-50.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-530C-F

##### Abstract

We show that solitonic solutions of the classical string action on the AdS

_{5}x S^{5}background that carry charges (spins) of the Cartan subalgebra of the global symmetry group can be classified in terms of periodic solutions of the Neumann integrable system. We derive equations which determine the energy of these solitons as a function of spins. In the limit of large spins J, the first subleading 1/J coefcient in the expansion of the string energy is expected to be non-renormalised to all orders in the inverse string tension expansion and thus can be directly compared to the 1-loop anomalous dimensions of the corresponding composite operators in N = 4 super YM theory. We obtain a closed system of equations that determines this subleading coefficient and, therefore, the 1-loop anomalous dimensions of the dual SYM operators. We expect that an equivalent system of equations should follow from the thermodynamic limit of the algebraic Bethe ansatz for the SO(6) spin chain derived from SYM theory. We also identify a particular string solution whose classical energy exactly reproduces the one-loop anomalous dimension of a certain set of SYM operators with two independent R charges J1, J2.