Journal
PHYSICS OF THE DARK UNIVERSE
Volume 32, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.dark.2021.100815
Keywords
Baryon to entropy ratio; Gravitational baryogenesis; Generalized gravitational baryogenesis; f (G, T) gravity; f (R, G) gravity; Power law scale factor
Categories
Ask authors/readers for more resources
The matter-antimatter asymmetry through baryogenesis mechanism in different gravity models with generalized baryogenesis interaction is being examined, and the baryon to entropy ratios in different models are found to be consistent with observational data.
The matter-antimatter asymmetry through baryogenesis (and generalized baryogenesis interaction) mechanism for well-known models of f (R, G) gravity (where R, G represent the Ricci scalar curvature and Gauss-Bonnet topological invariant) and f (G, T) (T denotes the trace of the energy momentum tensor) is being examined. This mechanism is based on the charge-parity (CP) violating interaction between the derivative of the Ricci scalar curvature and the baryon matter current, proposed by Davoudiasl et al. (2004). It is found that baryon to entropy ratio for f (G, T) gravity (specific models: f (G, T) = delta G(m) + lambda T and f (G, T) = delta G(m) + T + epsilon T-2), lies in the range 6.5(-2.5)(+2.5) x 10(-11) and 4(-5)(+5) x 10(-11). For f (R, G) (f (R, G) = k(1)R + k(2)R(n)G(m) and f (R, G) = f(0)R + f(1) root G) models, we also obtain the values of baryon to entropy ratio which are very close to observational data 9x10(-11). It is also mentioned here that results of general form of baryogenesis are also consistent with observational bounds for three models of modified theories of gravity. (C) 2021 Published by Elsevier B.V.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available