Gravitational Baryogenesis: Problems and Possible Resolution
Abstract
The coupling of baryonic current to the derivative of the curvature scalar, , inherent to gravitational baryogenesis (GBG), leads to a fourth order differential equation of motion for instead of the algebraic one of General Relativity (GR). The fourth-order differential equation is generically unstable. We consider a possible mechanism of stabilization of GBG by modification of gravity, introducing an -term into the canonical action of GR. It is shown that this mechanism allows for stabilization of GBG with bosonic and fermionic baryon currents. We have established the region of the model parameters leading to stabilization of . Still, the standard cosmology would be noticeably modified.
Keywords
Cite
@article{arxiv.2301.08322,
title = {Gravitational Baryogenesis: Problems and Possible Resolution},
author = {E. Arbuzova and A. Dolgov and K. Dutta and R. Rangarajan},
journal= {arXiv preprint arXiv:2301.08322},
year = {2023}
}
Comments
11 pages, no figures, presented at $6^{th}$ International Conference on Particle Physics and Astrophysics (ICCPA-2022)}. arXiv admin note: text overlap with arXiv:1808.08577