Cosmology with a TimeVariable Cosmological ``Constant''
Abstract
If the potential V(φ) of the scalar field that drove inflation had a powerlaw tail at large φ, V ~ φ^{aplpha}^, the mass density, ρ_{phi}_, associated with φ would act like a cosmological constant that decreases with time less rapidly than the mass densities of matter and radiation. If ρ_{phi}_ 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.
 Publication:

The Astrophysical Journal
 Pub Date:
 February 1988
 DOI:
 10.1086/185100
 Bibcode:
 1988ApJ...325L..17P
 Keywords:

 Astronomical Models;
 Cosmology;
 Dark Matter;
 Hubble Constant;
 Asymptotes;
 Curvature;
 Einstein Equations;
 Perturbation Theory;
 Quantum Theory;
 Astrophysics;
 COSMOLOGY;
 EARLY UNIVERSE