Semiclassical Strings on AdS_5 x S^5/Z_M and Operators in Orbifold Field Theories

Abstract

We show agreements, at one-loop level of field theory, between energies of semiclassical string states on AdS_5 x S^5/Z_M and anomalous dimensions of operators in N=0,1,2 orbifold field theories originating from N=4 SYM. On field theory side, one-loop anomalous dimension matrices can be regarded as Hamiltonians of spin chains with twisted boundary conditions. These are solvable by Bethe ansatz. On string side, twisted sectors emerge and we obtain some string configurations in twisted sectors. In SU(2) subsectors, we compare anomalous dimensions with string energies and see agreements. We also see agreements between sigma models of both sides in SU(2) and SU(3) subsectors.

LaTeX, 23 pages, 4 figures; v2 minor corrections, added references; v3 typos corrected, published version

References in corpus (3)

• Large spin limits of AdS/CFT and generalized Landau-Lifshitz equations
• Bethe ansatz and fluctuations in SU(3) Yang-Mills operators
• The Circular, Elliptic Three Spin String from the SU(3) Spin Chain

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