Spin Chain for Quantum Strings

Beisert, Niklas

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Spin Chain for Quantum Strings

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Beisert, Niklas
Duality & Integrable Structures, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Beisert, N. (2005). Spin Chain for Quantum Strings. Fortschritte der Physik, 53(7-8), 852-860.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-4E75-4

Abstract

We review and compare the integrable structures in N=4 gauge theory and string theory on AdS5xS5. Recently, Bethe ansaetze for gauge theory/weak coupling and string theory/strong coupling were proposed to describe scaling dimensions in the su(2) subsector. Here we investigate the Bethe equations for quantum string theory, naively extrapolated to weak coupling. Excitingly, we find a spin chain Hamiltonian similar, but not equal, to the gauge theory dilatation operator.