| Authors | Ehsan Bavarsad-Sang Pyo Kim-Clément Stahl-SheSheng Xue |
|---|---|
| Conference Title | Joint International Conference of ICGAC-XIII and IK-15 on Gravitation, Astrophysics and Cosmology |
| Holding Date of Conference | 2017-07-03~07 |
| Event Place | Seoul-Korea |
| Presented by | University of Kashan |
| Page number | 1-5 |
| Presentation | SPEECH |
| Conference Level | International Conferences |
Abstract
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.