Spatially inhomogeneous spacetimes with a self-symmetry of the second kind

Details Spatially inhomogeneous spacetimes with a self-symmetry of the second kind Spatially inhomogeneous spacetimes with a self-symmetry of the second kind

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.237...93a&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 237, March 1, 1989, p. 93-107. Research supported by SE

Statistics

Computation

10

Cosmology, Einstein Equations, Weak Energy Interactions, Computational Astrophysics, Universe

Scientific paper

A series of spherically symmetric spatially inhomogeneous solutions of the Einstein field equations which admit a self-similar symmetry is presented. These nonempty solutions contain a constant vacuum energy density; thus, the similarity is of the second type. One type of solution evolves to a de Sitter spacetime and is capable of predicting a negative pressure which drives an inflationary (exponential) expansion. This type of solution confirms the cosmological 'no-hair' conjecture and is thus an attractive candidate for an early universe model evolving into an isotropic solution.

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