Vacuum pair-production in a classical electric field and an electromagnetic wave |
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| Authors: | Hagen Kleinert She-Sheng Xue |
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| Institution: | 1. Institut für Theoretische Physik, Freie Universität Berlin, 14195 Berlin, Germany;2. ICRANeT Piazzale della Repubblica, 10-65122, Pescara, Italy;3. Physics Department, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy |
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| Abstract: | Using semiclassical WKB-methods, we calculate the rate of electron–positron pair-production from the vacuum in the presence of two external fields, a strong (space- or time-dependent) classical field and a monochromatic electromagnetic wave. We discuss the possible medium effects on the rate in the presence of thermal electrons, bosons, and neutral plasma of electrons and protons at a given temperature and chemical potential. Using our rate formula, we calculate the rate enhancement due to a laser beam, and discuss the possibility that a significant enhancement may appear in a plasma of electrons and protons with self-focusing properties. |
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| Keywords: | Vacuum electron&ndash positron production Strong electric field Laser beam |
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