The cosmic snap parameter in f ( R ) gravity

2006/10/31 by Nikodem J. Popławski, Nikodem J. Poplawski · 3 citations
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #COSMIC cancer database #Classical mechanics #Conformal map #Cosmology and Gravitation Theories #Einstein #Gravitation #Mathematical analysis #Mathematical physics #Physics #Quantum gravity #Quantum mechanics #Relativity and Gravitational Theory #Theoretical physics #astro-ph #f(R) gravity #gr-qc

paper · pdf · doi:10.1088/0264-9381/24/11/014

published as Class.Quant.Grav.24:3013-3020,2007 · 9 pages; published version

arxiv created 2007/05/22 · openalex publication_date 2007/05/22 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We derive the expression for the snap parameter in f ( R ) gravity. We use the Palatini variational principle to obtain the field equations and regard the Einstein conformal frame as physical. We predict the present-day value of the snap parameter for the particular case f ( R ) = R − const/ R , which is the simplest f ( R ) model explaining the current acceleration of the universe.

Citations

• Violation of the Equivalence Principle in Modified Theories of Gravity
• Conditions for the cosmological viability off(R)dark energy models
• Cosmography: Cosmology without the Einstein equations
• Statefinder -- a new geometrical diagnostic of dark energy
• The Luminosity Distance, the Equation of State, and the Geometry of the Universe
• On the equivalence of the relativistic theories of gravitation
• Jerk, snap and the cosmological equation of state
• Solar system testsdorule out1/Rgravity
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
• Dynamics of dark energy
• Is cosmic speed-up due to new gravitational physics?
• Reconciling dark energy models withf(R)theories
• INTRODUCTION TO MODIFIED GRAVITY AND GRAVITATIONAL ALTERNATIVE FOR DARK ENERGY

Cited by

• Canf(R)modified gravity theories mimic aΛCDMcosmology?
• Class of viable modifiedf(R)gravities describing inflation and the onset of accelerated expansion
• Cosmography off(R)gravity