Work

ΛCDM universe in f(R) gravity

Year: 2010

Type: article

Abstract: Several different explicit reconstructions of $f(R)$ gravity are obtained from the background Friedmann-La\^{\i}matre-Robertson-Walker expansion history. It is shown that the only theory whose Lagrangian is a simple function of the Ricci scalar $R$, that admits an exact $\ensuremath{\Lambda}\mathrm{CDM}$ expansion history, is standard general relativity with a positive cosmological constant and the only way to obtain this behavior of the scale factor for more general functions of $R$ is to add additional degrees of freedom to the matter sector.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.82.023519

Authors: Peter K. S. Dunsby, Emilio Elizalde, Rituparno Goswami, Sergei Odintsov, Diego Saez-Gomez

Institutions: University of Cape Town, South African Astronomical Observatory, Institute of Space Sciences, Consejo Superior de Investigaciones Científicas, Institut d'Estudis Espacials de Catalunya, Institució Catalana de Recerca i Estudis Avançats

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2115174776

FWCI: 5.97

Cites: 79

Cited by: 202

Related to: 9