Schwinger pair creation of Kaluza-Klein particles: Pair creation without tunneling

Details Schwinger pair creation of Kaluza-Klein particles: Pair creation without tunneling Schwinger pair creation of Kaluza-Klein particles: Pair creation without tunneling

2002-12-13

arxiv.org/abs/hep-th/0212163v3

Phys.Rev. D71 (2005) 064018

Physics

High Energy Physics

High Energy Physics - Theory

Original title: "Schwinger meets Kaluza-Klein"; 30 pages, 6 figures, references added

Scientific paper

10.1103/PhysRevD.71.064018

We study Schwinger pair creation of charged Kaluza-Klein particles from a static KK electric field. We find that the gravitational backreaction of the electric field on the geometry - which is incorporated via the electric KK Melvin solution - prevents the electrostatic potential from overcoming the rest mass of the KK particles, thus impeding the tunneling mechanism which is often thought of as responsible for the pair creation. However, we find that pair creation still occurs with a finite rate formally similar to the classic Schwinger result, but via an apparently different mechanism, involving a combination of the Unruh effect and vacuum polarization due to the E-field.

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