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

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

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011phrvd..84f4022b&link_type=abstract

Physical Review D, vol. 84, Issue 6, id. 064022

Mathematics

Logic

6

Canonical Formalism, Lagrangians, And Variational Principles, Mass And Mass Distribution

Scientific paper

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.

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