Version 1
: Received: 21 April 2020 / Approved: 26 April 2020 / Online: 26 April 2020 (04:34:34 CEST)
Version 2
: Received: 17 February 2024 / Approved: 18 February 2024 / Online: 19 February 2024 (14:51:50 CET)
Kruglov, S.I. Inflation of Universe by Nonlinear Electrodynamics. International Journal of Modern Physics D 2020, 29, 2050102, doi:10.1142/s0218271820501023.
Kruglov, S.I. Inflation of Universe by Nonlinear Electrodynamics. International Journal of Modern Physics D 2020, 29, 2050102, doi:10.1142/s0218271820501023.
Kruglov, S.I. Inflation of Universe by Nonlinear Electrodynamics. International Journal of Modern Physics D 2020, 29, 2050102, doi:10.1142/s0218271820501023.
Kruglov, S.I. Inflation of Universe by Nonlinear Electrodynamics. International Journal of Modern Physics D 2020, 29, 2050102, doi:10.1142/s0218271820501023.
Abstract
We show that Universe inflation occurs when Einstein's gravity couples to nonlinear electromagnetic fields with cosmic stochastic magnetic fields background. Nonlinear electrodynamics with two parameters is used. The strength of magnetic fields to have the Universe inflation is obtained. It is shown that singularities of the energy density and pressure are absent for any scale factors. At large scale factors one arrives at equation of state for ultra-relativistic case. It is demonstrated that the curvature invariants do not have singularities. By computing the deceleration parameter we show that graceful exit takes place with reasonable e-folding number. The duration of Universe inflation as a function of model parameters is obtained. The classical stability and causality are analyzed by calculating the speed of the sound.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
