Cosmology with a time-variable cosmological 'constant'

Details Cosmology with a time-variable cosmological 'constant' Cosmology with a time-variable cosmological 'constant'

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...325l..17p&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 325, Feb. 15, 1988, p. L17-L20. NSF-supported resea

Mathematics

Logic

844

Astronomical Models, Cosmology, Dark Matter, Hubble Constant, Asymptotes, Curvature, Einstein Equations, Perturbation Theory, Quantum Theory

Scientific paper

If the potential V(φ) of the scalar field that drove inflation had a power-law tail at large φ, V ≈ φ-α, the mass density, ρφ, associated with φ would act like a cosmological constant that decreases with time less rapidly than the mass densities of matter and radiation. If ρφ were appreciable at the present epoch it could help reconcile the low dynamical estimates of the mean mass density with the negligibly small space curvature preferred by inflation.

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