Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-10-25
Phys.Rev.D81:025001,2010
Physics
High Energy Physics
High Energy Physics - Theory
11 pages, 2 figures
Scientific paper
10.1103/PhysRevD.81.025001
The rate of $e^+e^-$ pair creation by external electric field in the presence of an incident photon beam is calculated for the photon energy far below the threshold, $\omega \ll m$, and the field strength small as compared to the critical one, $e E \ll m^2$. We find the pair production rate using a recently developed method based on calculation of the process in a thermal bath with subsequent identification of the contribution of single-photon states. We demonstrate that a non-trivial dependence on the ratio of the small parameters, $\omega m/(e E)$, emerges in this approach from an essentially (semi)classical calculation.
Monin Alexander
Voloshin Mikhail B.
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