Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-02-24
Phys.Rev.D84:034001,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
22 pages, 4 figures, RevTeX 4.1; minor additions and corrections
Scientific paper
10.1103/PhysRevD.84.034001
This work is the first check of gauge invariance for nonperturbative calculations in light-front QED. To quantize QED in an arbitrary covariant gauge, we use a light-front analog of the equal-time Stueckelberg quantization. Combined with a Pauli-Villars regularization, where massive, negative-metric photons and fermions are included in the Lagrangian, we are then able to construct the light-front QED Hamiltonian and the associated mass eigenvalue problem in a Fock-space representation. The formalism is applied to the dressed-electron state, with a Fock-space truncation to include at most one photon. From this eigenstate, we compute the anomalous magnetic moment. The result is found to be gauge independent, to an order in $\alpha$ consistent with the truncation.
Chabysheva Sofia S.
Hiller John R.
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