Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-09-17
ActaPhys.Polon.B37:3451-3476,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, invited lectures at the Cracow School of Theoretical Physics, Zakopane, June 2006. v2: improved version
Scientific paper
High energy scattering was recently shown to be similar to a reaction-diffusion process. The latter defines a wide universality class that also contains e.g. some specific population evolution models. The common point of all these models is that their respective dynamics are described by noisy traveling wave equations. This observation has led to a new understanding of QCD in the regime of high energies, and known universal results on reaction-diffusion models could be transposed to obtain quantitative properties of QCD amplitudes. Conversely, new general results for that kind of statistical models have also been derived. Furthermore, an intriguing relationship between noisy traveling wave equations and the theory of spin glasses was found.
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