Matter-antimatter asymmetry induced by non-linear electrodynamics

Abstract

In this work, we propose an economical model to address some open cosmological problems such as the absence of the initial cosmological singularity, an early acceleration of the Universe and the generation of matter-antimatter asymmetry. The model is based on a scenario in which the early Universe consists of a non-linear electrodynamics fields. It is found that the non-linear electrodynamics model has an equation of state p = 1 3 ρ − 4 3 βρ 1+α which shows that the Universe undergoes an early epoch acceleration to a radiation era given by p = 1 3 ρ. We show that the singularities in the energy density, pressure and curvature are absent at early stages. In our scenario, the baryon asymmetry is generated by the non-linearity parameter β. Additionally, we calculate the resulting baryon asymmetry and discuss how a successful gravitational baryogenesis is obtained for different values of the model's parameter space.

No Cauchy Horizon Theorem for Nonlinear Electrodynamics Black Holes with Charged Scalar Hairs

“…[16][17][18] and attracted many interests in cosmology, see e.g. [19][20][21][22]. There are various theories with nonlinear electromagnetic interactions in the literature and a recent discussion about the black hole thermodynamics in the presence of nonlinear electromagnetic fields can be found in [23].…”