Strings on pp-waves and Hadrons in (softly broken) N=1 gauge theories

Details Strings on pp-waves and Hadrons in (softly broken) N=1 gauge theories Strings on pp-waves and Hadrons in (softly broken) N=1 gauge theories

2003-07-04

arxiv.org/abs/hep-th/0307055v1

JHEP 0312 (2003) 042

Physics

High Energy Physics

High Energy Physics - Theory

20 pages

Scientific paper

10.1088/1126-6708/2003/12/042

We study the Penrose limit of Type IIB duals of softly broken N=1 SU(N) gauge theories in four dimensions, obtained as deformations of the Maldacena-Nunez and Klebanov-Strassler backgrounds. We extract the string spectrum on the resulting pp-wave backgrounds and discuss some properties of the conjectured dual gauge theory hadrons, the so called "Annulons". The string zero-point energy on the light-cone is nontrivial, due to the loss of linearly realized worldsheet supersymmetry, and negative, even in the unbroken supersymmetric case. This causes the appearance of non-perturbative corrections to the hadronic mass spectrum. We briefly discuss the thermodynamic behavior of these string models, calculating the corresponding Hagedorn temperatures.

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