TY - JOUR
T1 - Matter-antimatter asymmetry induced by non-linear electrodynamics
AU - Benaoum, H. B.
AU - OVGUN, ALI
N1 - Funding Information:
HBB gratefully acknowledges the financial support from University of Sharjah (Competitive Research Project # 2002143086, V.C.R.G).
Publisher Copyright:
© 2021 IOP Publishing Ltd.
PY - 2021/7
Y1 - 2021/7
N2 - 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 (NLED) fields. It is found that the NLED model has an equation of state p = 13 ρ - 43 βρ1+α which shows that the Universe undergoes an early epoch acceleration to a radiation era given by p = 13 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.
AB - 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 (NLED) fields. It is found that the NLED model has an equation of state p = 13 ρ - 43 βρ1+α which shows that the Universe undergoes an early epoch acceleration to a radiation era given by p = 13 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.
KW - Cosmology
KW - Early Universe
KW - Gravitational baryogenesis
KW - Nonlinear electrodynamics
UR - http://www.scopus.com/inward/record.url?scp=85107968771&partnerID=8YFLogxK
U2 - 10.1088/1361-6382/abfd90
DO - 10.1088/1361-6382/abfd90
M3 - Article
AN - SCOPUS:85107968771
VL - 38
JO - Classical and Quantum Gravity
JF - Classical and Quantum Gravity
SN - 0264-9381
IS - 13
M1 - 135019
ER -