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Compton scattering in the light-cone Tamm-Dancoff approximation
Phys. Rev. D 45, 3775 – Published 15 May, 1992
DOI: https://doi.org/10.1103/PhysRevD.45.3775
Abstract
The Tamm-Dancoff approximation is used to study Compton scattering in light-cone-quantized QED (D. Mustaki, S. Pinsky, J. Shigemitsu, and K. G. Wilson) The charge-one sector is considered in a two-particle truncated Fock space. The problem is exactly solvable and it is shown that the internal photon propagator develops a singularity similar to the one reported in the light-cone calculation of positronium (M. Krautgärtner, H. C. Pauli, and F. Wölz). This singularity depends on the external energy and therefore cannot be removed by the conventional counterterms.
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