Strings for Quantumchromodynamics

Abstract

During the last ten years, intriguing dualities between gauge and string theory have been found and explored. They provide a novel window on strongly coupled gauge physics, including QCD-like models. Based on a short historical review of modern string theory, we shall explain how so-called AdS/CFT dualities emerged at the end of the 1990s. Some of their concrete implications and remarkable recent progress are then illustrated for the simplest example, namely the multicolor limit of \N=4 Super Yang-Mills theory in four dimensions. We end with a few comments on existing extensions to more realistic models and applications, in particular to strongly coupled quark gluon plasmas. This text is meant as a non-technical introduction to gauge/string dualities for (particle) physicists.

11 pages; Presented at 33rd International Conference on High Energy Physics (ICHEP 06), Moscow, Russia, 26 Jul - 2 Aug 2006

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• Exclusive central diffractive production of scalar and pseudoscalar mesons; tensorial vs. vectorial pomeron
• On coincidence of Alday-Maldacena-regularized $\sigma$-model and Nambu-Goto areas of minimal surfaces
• Introduction to String Theory and Gauge/Gravity duality for students in QCD and QGP phenomenology
• Spin correlations in the Drell-Yan process, parton entanglement, and other unconventional QCD effects