Anisotropy effects on Baryogenesis in $f(R)$-Theories of Gravity

Abstract

We study the $f(R)$ theory of gravity in an anisotropic metric and its effect on the baryon number to entropy ratio. The mechanism of gravitational baryogenesis based on the CPT-violating gravitational interaction between derivative of the Ricci scalar curvature and the baryon-number current is investigated in the context of the $f(R)$ gravity. The gravitational baryogenesis in the Bianchi type I universe is examined. We survey the effect of anisotropy of the universe on the baryon asymmetry from point of view the $f(R)$-theories of gravity and its effect on $n_b/s$ for radiation dominant regime.

9pages. 6 figure

References in corpus (14)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
• Disappearing cosmological constant in f(R) gravity
• Cosmological viability of f(R)-gravity as an ideal fluid and its compatibility with a matter dominated phase
• Holographic dark energy in Brans-Dicke theory
• Dark energy models with variable equation of state parameter
• Baryogenesis in $f(R)$-Theories of Gravity
• Further Exact Cosmological Solutions to Higher-Order Gravity Theories
• Bianchi Type III Anisotropic Dark Energy Models with Constant Deceleration Parameter
• Constraining f(T) teleparallel gravity by Big Bang Nucleosynthesis
• Gauss-Bonnet Gravitational Baryogenesis
• $f(T)$ gravitational baryogenesis
• Loop Quantum Cosmology Gravitational Baryogenesis

Cited by in corpus (6)

• Stability analysis of anisotropic Bianchi type-I cosmological model in teleparallel gravity
• Gravitational baryogenesis models comparison in f(R) Gravity
• Gravitational baryogenesis in non-minimal kinetic coupling model
• Baryon asymmetry constraints on Extended Symmetric Teleparallel Gravity
• Gravitational baryogenesis beyond the spectator approximation
• Non-canonical scalar field in low anisotropy universe with intermediate inflation