"Large N gauge theories from superstrings"
Relatore: Prof. Jorge Russo- University of Barcelona (Spain)
19 Settembre 2006 ore 15.30
|We review some basic aspects on the duality between gauge
theories and superstring theory on anti de Sitter spaces.
An important problem is understanding the correspondence
between the spectrum of operators in the planar Yang-Mills
theory and the quantum string spectrum of free superstring
on anti de Sitter space. In recent years, the study of
this correspondence led to the discovery of integrable
structures on both sides of the duality. On the Yang-Mills
side, one has a description of the spectrum in terms of
integrable spin chain systems, with elementary
excitations that propagate along the chain: the magnons.
On the string side, one has a description in terms of
classical strings with large angular momentum.
Finally, we comment on applications of AdS/CFT to