How natural is a small but nonzero cosmological constant?

Details How natural is a small but nonzero cosmological constant? How natural is a small but nonzero cosmological constant?

1995-08-14

arxiv.org/abs/gr-qc/9508029v1

Astropart.Phys.5:133-138,1996

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12 pages, latex, 5 figures as epsf files included, compressed uuencoded

Scientific paper

10.1016/0927-6505(96)00012-6

Based on our previous attempt, we propose a better way to understand a small but nonzero cosmological constant, as indicated by a number of recent observational studies. We re-examine the assumptions of our model of two scalar fields, trying to explain the basic mechanism resulting in a series of mini-inflations occuring nearly periodically with respect to $\ln t$ with $t$ the cosmic time. We also discuss how likely the solution of this type would be, depending on the choice of the parameters.

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