Big-Bang Nucleosynthesis and WIMP dark matter in modified gravity

Abstract

In the present work the primordial Big-Bang Nucleosynthesis (BBN) and weakly interacting massive particle (WIMP) dark matter are discussed in a certain class of modified gravitational theories, namely $f(R)\sim R^n$ gravity. The new gravitational model is characterized by a single parameter $n$. First we determine the conditions under which the theoretical predictions for the ${}^4$He abundance are in agreement with the observations. More precisely, during BBN the physics is known and all the parameters are known. The only free parameter to be constrained is the power $n$ related to the new gravitational model. After that, for cold dark matter we use the value of $n$ determined from the BBN considerations and determine how the mass of the dark matter particle is related to the annihilation cross section in order for the cold dark matter constraint to be satisfied.

Final version to appear in Phys.Lett.B

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Cited by in corpus (18)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Neutrino coupling to cosmological background: A review on gravitational Baryo/Leptogenesis
• Big Bang Nucleosynthesis and Entropy Evolution in $f(R,T)$ Gravity
• Cosmic relic abundance and f(R) gravity
• Can $f(T)$ models play a bridge between early and late time Universe?
• Big Bang Nucleosynthesis constraints on $f(T,\mathcal{T})$ gravity
• Constraints on Tsallis Cosmology from Big Bang Nucleosynthesis and the Relic Abundance of Cold Dark Matter Particles
• Dark matter in a bouncing universe
• BBN Constraints on $f(Q,T)$ Gravity
• Consequences of f(R)-theories of gravity on gravitational leptogenesis
• Corrected constraints on big bang nucleosynthesis in a modified gravity model of $f(R)\propto R^n$
• Constraints on modified Gauss-Bonnet gravity during big bang nucleosynthesis
• WIMPs in Dilatonic Einstein Gauss-Bonnet Cosmology
• Dark Matter Is The New BBN
• Oscillating cosmic evolution and constraints on big bang nucleosynthesis in the extended Starobinsky model
• Gauss-Bonnet Cosmology: large-temperature behaviour and bounds from Gravitational Waves
• Big Bang nucleosynthesis and baryogenesis in power-law $f(R)$ gravity: Revised constraints from the semianalytical approach
• Thermal relics as hot, warm and cold dark matter in power-law $f(R)$ gravity