Baryogenesis in $f(R,L_m)$ gravity

Abstract

This paper aims to recreate the gravitational baryogenesis epoch in the framework of the $f(R,L_m)$ theory of gravity, where $R$ and $L_m$ are the curvature scalar and the matter Langragian, respectively. In particular, we examine the model, $f(R,L_m)=\frac{R}{2}+L_m^{\alpha }+\zeta$, under the supposition that the universe is saturated with dark energy and perfect fluid, with a non-zero baryon to entropy ratio during a radiation dominance era. We confine the model with the gravitational baryogenesis scenario, emphasizing the appropriate values of model parameters compatible with the baryon-to-entropy ratio observation data. Our study found that $f(R,L_m)$ gravity can considerably and steadily make a contribution to the phenomenon of gravitational baryogenesis.

arXiv commentPhysics of the Dark Universe published version

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• $f(Q,L_m)$ gravity, and its cosmological implications
• The cosmology of $f(R,L_m)$ gravity: constraining the background and perturbed dynamics
• Baryogenesis in quantum fluctuation modified gravity
• Gravitational baryogenesis in $f(T,L_m)$ gravity
• Baryon asymmetry from higher-order matter contributions in gravity
• Energy Conditions and Stability of Charged Wormholes in $f(R,{\mathcal{L}}_m)$ Gravity: A Comparative Analysis with Compact Objects