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arXiv · 0903.3373

Traveling wave solution of the Reggeon Field Theory

Robi Peschanski
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Abstract

We identify the nonlinear evolution equation in impact-parameter space for the "Supercritical Pomeron" in Reggeon Field Theory as a 2-dimensional stochastic Fisher-Kolmogorov-Petrovski-Piscounov equation. It exactly preserves unitarity and leads in its radial form to an high energy traveling wave solution corresponding to an ""universal" behaviour of the impact-parameter front profile of the elastic amplitude; Its rapidity dependence and form depend only on one parameter, the noise strength, independently of the initial conditions and of the non-linear terms restoring unitarity. Theoretical predictions are presented for the three typical distinct regimes corresponding to zero, weak and strong noise.

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Robi Peschanski. 2009-03-23. Traveling wave solution of the Reggeon Field Theory. https://doi.org/10.1103/physrevd.79.105014

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