Phantom crossing in viable $f(R)$ theories

Abstract

We review the equation of state for dark energy in modified gravity theories. In particular, we summarize the generic feature of the phantom divide crossing in the past and future in viable $f(R)$ gravity models.

7 pages, 3 figures, talk presented at the 2nd International Workshop on Dark Matter, Dark Energy and Matter-Antimatter Asymmetry, Hsinchu, Taiwan, 5-6 Nov 2010

References in corpus (8)

• Dynamics of dark energy
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• Disappearing cosmological constant in f(R) gravity
• Class of viable modified $f(R)$ gravities describing inflation and the onset of accelerated expansion
• Observational signatures of f(R) dark energy models that satisfy cosmological and local gravity constraints
• Exponential Gravity
• The dispersion of growth of matter perturbations in f(R) gravity
• Oscillating phantom in $F(R)$ gravity

Cited by in corpus (23)

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• Black holes, cosmological solutions, future singularities, and their thermodynamical properties in modified gravity theories
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• Traversable Wormholes and Energy Conditions with Two Different Shape Functions in $f(R)$ Gravity
• Traversable Wormholes in $R+\alpha R^n$ Gravity
• Omnipotent dark energy: A phenomenological answer to the Hubble tension
• Non violation of energy conditions in wormholes modelling
• Large Scale Structure Constraints for a Class of f(R) Theories of Gravity
• New holographic reconstruction of scalar field dark energy models in the framework of chameleon Brans-Dicke cosmology
• Tideless Traversable Wormholes surrounded by cloud of strings in $f(R)$ gravity
• Cosmological evolution, future singularities, Little Rip and Pseudo-Rip in viable f(R) theories and their scalar-tensor counterpart
• Note on the equation of state of geometric dark-energy in f(R) gravity
• Traversable wormhole in logarithmic $f(R)$ gravity by various shape and redshift functions
• Late Time Cosmological Evolution in f(R) theories with Ordinary and Collisional Matter
• Constraints on the Combined Models with $R^{2-q}$ Inflation and Viable $f(R)$ Dark Energy
• Matter power spectrum in a power-law $f(G)$ gravity
• Constraining gravity with hadron physics: neutron stars, modified gravity and gravitational waves
• Viability of Arctan Model of f(R) Gravity for Late-time Cosmology
• Quintom Dark Energy: Future Attractor and Phantom Crossing in Light of DESI DR2 Observation
• A New f(R) Model in the Light of Local Gravity Test and Late-time Cosmology
• Preventing Curvature Singularities in $f(R)$ Dark Energy Models
• Revisited apparent horizon entropy and GSL in modified gravity
• Globally Stable Dark Energy in $F(R)$ Gravity