Gravitational baryogenesis of cosmological constant dominated universe
Sudhir Kumar Srivastava, Ahmad T Ali, Anil Kumar Yadav
TL;DR
This paper explores gravitational baryogenesis in a universe transitioning from decelerated to accelerated expansion due to the cosmological constant, providing an exact solution consistent with observations.
Contribution
It presents a new exact solution of Einstein's equations for a transitioning universe and demonstrates baryogenesis occurs within this model, aligning with observational data.
Findings
Baryon entropy ratio matches observational values
Universe transitions from decelerated to accelerated expansion
New exact solution of Einstein's equations for FRW universe
Abstract
In this paper, we have studied the gravitational baryogenesis of isotropic and homogeneous universe in the frame-work of general relativity. We investigate an exact and new solution of Einstein's field equations for FRW metric. Our solution represents a transitioning model of the universe which was expanding in decelerated mode and it transit in accelerated mode after dominance of cosmological constant . We observe that gravitational baryogenesis occurs in the derived universe and derived baryon entropy ratio is in good agreement with its observational value.
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