Charged perfect fluids in the presence of a cosmological constant

Details Charged perfect fluids in the presence of a cosmological constant Charged perfect fluids in the presence of a cosmological constant

2010-10-07

arxiv.org/abs/1010.1367v2

Gen.Rel.Grav.43:3033-3046,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

14 pages, 2 figures; revised version, one subsection removed, minor changes throughout the text

Scientific paper

10.1007/s10714-011-1223-5

We consider the static and spherically symmetric field equations of general relativity for charged perfect fluid spheres in the presence of a cosmological constant. Following work by Florides (1983) we find new exact solutions of the field equations, and discuss their mass radius ratios. These solutions, for instance, require the charged Nariai metric to be the vacuum part of the spacetime. We also find charged generalizations of the Einstein static universe and speculate that the smallness problem of the cosmological constant might become less problematic if charge is taken into account.

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