Pair creation in inhomogeneous fields from worldline instantons

Details Pair creation in inhomogeneous fields from worldline instantons Pair creation in inhomogeneous fields from worldline instantons

2006-04-11

arxiv.org/abs/hep-ph/0604089v1

AIP Conf.Proc.857:240-248,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 2 figures, talk given by C.S. at X Mexican Workshop on Particles and Fields, Morelia, Mexico, Nov. 6 - 12, 2005 (to

Scientific paper

10.1063/1.2359262

We show how to do semiclassical nonperturbative computations within the worldline approach to quantum field theory using ``worldline instantons''. These worldline instantons are classical solutions to the Euclidean worldline loop equations of motion, and are closed spacetime loops parametrized by the proper-time. Specifically, we compute the imaginary part of the one loop effective action in scalar and spinor QED using worldline instantons, for a wide class of inhomogeneous electric field backgrounds.

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