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arXiv · hep-ph/0604089

Pair creation in inhomogeneous fields from worldline instantons

Gerald V. Dunne·Christian Schubert
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Abstract

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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Gerald V. Dunne, Christian Schubert. 2006-04-11. Pair creation in inhomogeneous fields from worldline instantons. https://doi.org/10.1063/1.2359262

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