Modified similarity renormalization of Hamiltonians. QED on the light front

Abstract

Modified similarity renormalization of Hamiltonians is proposed, that performes by means of flow equations the similarity transformation of Hamiltonian in the particle number space. This enables to renormalize in the energy space the field theoretical Hamiltonian and makes possible to work in a severe trancated Fock space for the renormalized Hamiltonian.

posters presented on the workshop "Confinement, duality and non-perturbative aspects of QCD", 23 June-4 July, Cambridge, England; 9 pages, Latex, 4 eps-figures loaded, using special package with command "\usepackage{epsfig}"