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Spin chain for quantum strings
Author(s) -
Beisert N.
Publication year - 2005
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/prop.200410207
Subject(s) - physics , integrable system , relationship between string theory and quantum field theory , hamiltonian (control theory) , string field theory , gauge theory , string theory , mathematical physics , quantum mechanics , non critical string theory , string (physics) , hamiltonian lattice gauge theory , quantum gauge theory , coupling (piping) , theoretical physics , quantum electrodynamics , quantum , quantum gravity , mathematics , gauge boson , gauge fixing , mechanical engineering , mathematical optimization , engineering
We review and compare the integrable structures in = 4 gauge theory and string theory on AdS 5 × S 5 . Recently, Bethe ansätze for gauge theory/weak coupling and string theory/strong coupling were proposed to describe scaling dimensions in the (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.