Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-02-28
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, 4 figures, RevTeX 4.1; expanded description of method and replaced QED with simpler model for illustration
Scientific paper
We propose a new method for the nonperturbative solution of quantum field theories and illustrate its use in the context of a light-front analog to the Greenberg--Schweber model. The method is based on light-front quantization and uses the exponential-operator technique of the many-body coupled-cluster method. The formulation produces an effective Hamiltonian eigenvalue problem in the valence Fock sector of the system of interest, combined with nonlinear integral equations to be solved for the functions that define the effective Hamiltonian. The method avoids the Fock-space truncations usually used in nonperturbative light-front Hamiltonian methods and, therefore, does not suffer from the spectator dependence, Fock-sector dependence, and uncanceled divergences caused by such truncations.
Chabysheva Sofia S.
Hiller John R.
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