Aspects of Axion $F(R)$ Gravity

Abstract

We provide a compact review on recent developments on axion $F(R)$ gravity. The axion field is a string theory originating theoretical particle that is a perfect candidate for low-mass particle dark matter. In this review we present how a viable inflationary phenomenology and a viable late-time evolution can be described by an axion $F(R)$ gravity theory, in which the $F(R)$ gravity part can drive in a geometric way the inflationary and the late-time era, and the axion field behaves as dark matter, with its energy density ${\rho }_a$ behaving as a function of the scale factor as ${\rho }_a\sim a^{-3}$. We also briefly discuss the effect of a non-trivial axion Chern-Simons coupling on the inflationary phenomenology of the $R^2$ model. Finally, we briefly discuss the effects of a non-minimal coupling of the axion field with the curvature on neutron stars, and also the propagation of gravity waves in Chern-Simons axion gravity.

Invited perspective-review paper from EPL, EPL Accepted

References in corpus (23)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• Modified f(R) gravity consistent with realistic cosmology: from matter dominated epoch to dark energy universe
• Class of viable modified $f(R)$ gravities describing inflation and the onset of accelerated expansion
• Palatini Approach to Modified Gravity: f(R) Theories and Beyond
• Discovering the QCD Axion with Black Holes and Gravitational Waves
• Bose-Einstein Condensation of Dark Matter Axions
• Modified f(R) gravity unifying R^m inflation with \LambdaCDM epoch
• Dark Matter and Collider Phenomenology of Universal Extra Dimensions
• Model independent evidence for dark energy evolution from Baryon Acoustic Oscillations
• Resonant detection of axion mediated forces with Nuclear Magnetic Resonance
• Circular Polarization of Primordial Gravitational Waves in String-inspired Inflationary Cosmology
• The effects of Chern-Simons gravity on bodies orbiting the Earth
• Extreme- and Intermediate-Mass Ratio Inspirals in Dynamical Chern-Simons Modified Gravity
• Unification of Inflation with Dark Energy in $f(R)$ Gravity and Axion Dark Matter
• Geometric Inflation and Dark Energy with Axion $F(R)$ Gravity
• $f(R)$ Gravity Inflation with String-Corrected Axion Dark Matter
• Direct Detection of Dark Matter Rates for Various Wimps
• Cosmic history of viable exponential gravity: Equation of state oscillations and growth index from inflation to dark energy era
• Supermassive Neutron Stars in Axion $F(R)$ Gravity
• Oscillating Chiral Tensor Spectrum from Axionic Inflation
• Dark energy and dark matter unification from dynamical space time: observational constraints and cosmological implications
• Axion-induced oscillations of cooperative electric field in a cosmic magneto-active plasma

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• Axion-plasmon or magnetized plasma effect on an observable shadow and gravitational lensing of a Schwarzschild black hole
• Superradiant evolution of the shadow and photon ring of Sgr A${}^{\star }$
• Brief Review of Recent Advances in Understanding Dark Matter and Dark Energy
• Reconstruction of quintessence field for the THDE with swampland correspondence in $f(R,T)$ gravity
• Effects of the Axion Through the Higgs Portal on Primordial Gravitational Waves During the Electroweak Breaking
• Kinetic Axion $F(R)$ Gravity Inflation
• Scalarons mimicking Dark Matter in the Hu-Sawicki model of f(R) gravity
• Remarks on the weak cosmic censorship conjecture of RN-AdS black holes with cloud of strings and quintessence under the scalar field
• Late-Time Cosmology of Scalar-Coupled $f(R,\mathcal{G})$ Gravity
• Separation of variables in Hamilton-Jacobi equation for a charged test particle in the Stackel spaces of type (2.1)
• Separation of variables in Hamilton-Jacobi and Klein-Gordon-Fock equations for a charged test particle in the Stackel spaces of type (1.1)
• Scalar induced gravitational waves from Chern-Simons gravity during inflation era
• $k$-Inflation-corrected Einstein-Gauss-Bonnet Gravity with Massless Primordial Gravitons
• Solar chameleons: Novel channels
• Weak Gravitational Lensing in Ricci-Coupled Kalb-Ramond Bumblebee Gravity: Global Monopole and Axion-Plasmon Medium Effects
• Kinetic Axion Dark Matter in String Corrected $f(R)$ Gravity
• $R^2$ Gravity Effects on the Kinetic Axion Phase Space
• Scalar induced gravitational waves in chiral scalar-tensor theory of gravity
• The interaction of extended Bose-Einstein condensate dark matter with viscous $f(T,B)$ gravity
• Non-minimal Coupling Inflation and Dark Matter under the ${\mathbb{Z}}_3$ Symmetry
• Gravitational Wave From Axion-like Particle Inflation
• Holographic description of the dissipative unified dark fluid model with axion field
• Interaction of the Cosmic Dark Fluid with Dynamic Aether: Parametric Mechanism of Axion Generation in the Early Universe
• Holographic description of $F(R)$ gravity coupled with Axion Dark Matter
• On inflationary parameters in scalar-tensor theories
• Unrivaled Quantum Vacuum in the Primordial Universe