Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-06-05
Phys.Rev.D82:034004,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, 1 figure, RevTeX 4.1; corrected typos and updated references
Scientific paper
10.1103/PhysRevD.82.034004
We continue the development of a nonperturbative light-front Hamiltonian method for the solution of quantum field theories by considering the one-photon eigenstate of Lorentz-gauge QED. The photon state is computed nonperturbatively for a Fock basis with a bare photon state and electron-positron pair states. The calculation is regulated by the inclusion of Pauli-Villars (PV) fermions, with one flavor to make the integrals finite and a second flavor to guarantee a zero mass for the physical photon eigenstate. We compute in detail the constraints on the PV coupling strengths that this zero mass implies. As part of this analysis, we provide the complete Lorentz-gauge light-front QED Hamiltonian with two PV fermion flavors and two PV photon flavors, which will be useful for future work. The need for two PV photons was established previously; the need for two PV fermions is established here.
Chabysheva Sofia S.
Hiller John R.
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