A semiclassical limit of the gauge/string correspondence
Abstract
A worldsheet sigma model approach is applied to string theories dual to fourdimensional gauge theories, and semiclassical soliton solutions representing highly excited string states are identified which correspond to gauge theory operators with relatively small anomalous dimensions. The simplest class of such states are strings on the leading Regge trajectory, with large spin in AdS_{5}. These correspond to operators with many covariant derivatives, whose anomalous dimension grows logarithmically with the spacetime spin. In the gauge theory, the logarithmic scaling violations are similar to those found in perturbation theory. Other examples of highly excited string states are also considered.
 Publication:

Nuclear Physics B
 Pub Date:
 August 2002
 DOI:
 10.1016/S05503213(02)003735
 arXiv:
 arXiv:hepth/0204051
 Bibcode:
 2002NuPhB.636...99G
 Keywords:

 High Energy Physics  Theory
 EPrint:
 19 pages, latex, one figure. v2: references added, improved discussion. v3: another ref added, minor corrections, version to appear in NPB