Integrable Spin Chain and Operator Mixing in N=1,2 Supersymmetric Theories

Details Integrable Spin Chain and Operator Mixing in N=1,2 Supersymmetric Theories Integrable Spin Chain and Operator Mixing in N=1,2 Supersymmetric Theories

2003-11-10

arxiv.org/abs/hep-th/0311073v3

Nucl.Phys. B683 (2004) 363-386

Physics

High Energy Physics

High Energy Physics - Theory

30 pages, 3 eps figs, V2: typos corrected and references added

Scientific paper

10.1016/j.nuclphysb.2003.12.040

We study operator mixing, due to planar one-loop corrections, for composite operators in D=4 supersymmetric theories. We present some N=1,2 Yang-Mills and Wess-Zumino models, in which the planar one-loop anomalous dimension matrix in the sector of holomorphic scalars is identified with the Hamiltonian of an integrable quantum spin chain of SU(3) or SU(2) symmetry, even if the theory is away from the conformal points. This points to a more universal origin of the integrable structure beyond superconformal symmetry. We also emphasize the role of the superpotential in the appearance of the integrable structure. The computations of operator mixing in our examples by solving Bethe Ansatz equations show some new features absent in N=4 SYM.

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