Abstract
The local reggeon field theory is studied perturbatively taking advantage of the PT symmetry in the Hamiltonian formulation. In the lowest non-trivial order we show that the pomeron interactions renormalize the slope. In the same order we find a non-local pair potential acting between pomerons, which has a singular structure. However, the analysis of the scattering operator shows that at small coupling constant bound states do not appear so that the two-particle spectrum is not changed.
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Braun, M.A., Vacca, G.P. PT symmetry and Hermitian Hamiltonian in the local supercritical pomeron model. Eur. Phys. J. C 59, 795–808 (2009). https://doi.org/10.1140/epjc/s10052-008-0820-2
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DOI: https://doi.org/10.1140/epjc/s10052-008-0820-2