Loop expansion in massless three-dimensional QED Academic Article uri icon

abstract

  • It is shown how the loop expansion in massless three-dimensional QED can be made finite, up to three loops, by absorbing the infrared divergences in a gauge-fixing term. The same method removes leading and first subleading singularities to all orders of perturbation theory, and all singularities of the fermion self-energy to four loops.

publication date

  • January 1, 1983