Modified gravity as an alternative for ΛCDM cosmology

2006/10/14 by Shin'ichi Nojiri, Shin’ichi Nojiri, Sergei D. Odintsov · 1 citation
Physics and Astronomy · #Astronomy #Black Holes and Theoretical Physics #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Physics #Theoretical physics #hep-th

paper · pdf · doi:10.1088/1751-8113/40/25/s17

published as J.Phys.A40:6725-6732,2007 · LaTeX file, 9pages, no figure, prepared for Special Issue IRGAC 2006, Barcelona

arxiv created 2006/10/14 · openalex publication_date 2007/06/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The reconstruction scheme is developed for modified f(R) gravity with realistic matter (dark matter, baryons, radiation). Two versions of such theory are constructed: the first one describes the sequence of radiation and matter domination, decceleration-acceleration transition and acceleration era and the second one is reconstructed from exact Lambda-CDM cosmology. The asymptotic behaviour of first model at late times coincides with the theory containing positive and negative powers of curvature while second model approaches to General Relativity without singularity at zero curvature.

Citations

• Dark energy cosmology from higher-order, string-inspired gravity, and its reconstruction
• Dark energy: the equation of state description versus scalar-tensor or modified gravity
• Stability of modified gravity models
• Cosmological perturbations in the Palatini formulation of modified gravity
• Is cosmic speed-up due to new gravitational physics?
• Reconciling dark energy models withf(R)theories
• One-loopf(R) gravity in de Sitter universe
• Curvature Quintessence

Cited by

• A viable model for modified gravity