Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-07-26
Comptes Rendus Physique 5:1049-1059,2004
Physics
High Energy Physics
High Energy Physics - Theory
21 pages. Based on talks at Workshop on Continuous Advances in QCD 2004, Minneapolis, May 13-16 and Strings 2004, Paris, June
Scientific paper
10.1016/j.crhy.2004.09.009
We review recent progress in checking AdS/CFT duality in the sector of ''semiclassical'' string states dual to ''long'' scalar operators of N=4 super Yang-Mills theory. In particular, we discuss the effective action approach, in which the same sigma model type action describing coherent states is shown to emerge from the AdS_5 x S^5 string action and from the spin chain Hamiltonian representing the SYM dilatation operator.
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