Application of Pauli-Villars regularization and discretized light-cone quantization to a single-fermion truncation of Yukawa theory

Abstract

We apply Pauli-Villars regularization and discretized light-cone quantization to the nonperturbative solution of (3+1)-dimensional Yukawa theory in a single-fermion truncation. Three heavy scalars, including two with negative norm, are used to regulate the theory. The matrix eigenvalue problem is solved for the lowest-mass state with use of a new, indefinite-metric Lanczos algorithm. Various observables are extracted from the wave functions, including average multiplicities and average momenta of constituents, structure functions, and a form factor slope.

21 pages, 7 figures, RevTeX; published version: more extensive data in the tables of v1

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