Mimicking the cosmological constant: Constant curvature spherical solutions in a nonminimally coupled model

• Type: Article in International Scientific Journal
• Date: 2011

Authors

bertolami, o (Author) FCUP; paramos, j (Author) Other

Journal

Title: Physical Review D - Particles, Fields, Gravitation and Cosmology

Vol. 84

ISSN: 1550-7998

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 32 Citations

Scopus - 34 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-002-MHG

DOI: 10.1103/physrevd.84.064022

Abstract (EN): The purpose of this study is to describe a perfect fluid matter distribution that leads to a constant curvature region, thanks to the effect of a nonminimal coupling. This distribution exhibits a density profile within the range found in the interstellar medium and an adequate matching of the metric components at its boundary. By identifying this constant curvature with the value of the cosmological constant and superimposing the spherical distributions arising from different matter sources throughout the universe, one is able to mimic a large-scale homogeneous cosmological constant solution.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11