2016/05/31 by Alex Kovner, Eugene Levin, Michael Lublinsky
Physics and Astronomy · #Constraint (computer-aided design) #Effective field theory #Field theory (psychology) #Hamiltonian (control theory) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Pomeron #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Resummation #Unitarity #Vertex (graph theory) #hep-ph #hep-th
paper · pdf · doi:10.1007/jhep08(2016)031
34 pages, 9 Figs; Minor clarifications on the concept of unitarity are added. JHEP version
openalex created_date 2016/06/24 · openalex publication_date 2016/08/01 · arxiv created 2016/08/02 · arxiv updated 2016/08/24 · openalex updated_date 2026/08/05
We point out that the s-channel unitarity of QCD imposes meaningful constraints on a possible form of the QCD Reggeon Field Theory. We show that neither the BFKL nor JIMWLK nor Braun’s Hamiltonian satisfy the said constraints. In a toy, zero transverse dimensional case we construct a model that satisfies the analogous constraint and show that at infinite energy it indeed tends to a “black disk limit” as opposed to the model with triple Pomeron vertex only, routinely used as a toy model in the literature.