Schwinger mechanism in electromagnetic field in de Sitter spacetime
Department of Physics, University of Kashan, 8731753153, Kashan, Iran
2 Department of Physics, Kunsan National University, Kunsan 54150, Korea
3 Center for Relativistic Laser Science, Institute for Basic Science, Gwangju 61005, Korea
4 Instituto de Física, Pontificia Universidad Católica de Valparaíso, Casilla 4950, Valparaíso, Chile
5 ICRANet, Piazzale della Repubblica 10, 65122 Pescara, Italy
6 Dipartimento di Fisica, Universita di Roma “La Sapienza”, Piazzale Aldo Moro 5, 00185 Rome, Italy
* e-mail: firstname.lastname@example.org
Published online: 9 January 2018
We investigate Schwinger scalar pair production in a constant electromagnetic field in de Sitter (dS) spacetime. We obtain the pair production rate, which agrees with the Hawking radiation in the limit of zero electric field in dS. The result describes how a cosmic magnetic field affects the pair production rate. In addition, using a numerical method we study the effect of the magnetic field on the induced current. We find that in the strong electromagnetic field the current has a linear response to the electric and magnetic fields, while in the infrared regime, is inversely proportional to the electric field and leads to infrared hyperconductivity.
© The Authors, published by EDP Sciences, 2018
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