A Model of the Universe with Time Dependent Cosmological Constant Free of Cosmological Problems
Jun, 198521 pages
Published in:
- Nucl.Phys.B 287 (1987) 776-796
- Published: 1987
Report number:
- Print-85-0642 (RIYADH)
Citations per year
Abstract: (Elsevier)
A cosmological model with an additional term Λ ( x ) g μν in the energy-momentum tensor is introduced. Its structure is specified by the assumption that the energy density of the universe equals its critical value. The model so determined has k = 1, is singularity-free and does not possess the horizon, entropy, monopole or cosmological-constant problems of the standard hot bang cosmology. The whole universe is found to be causally connected slightly after Planck time. There exists a period of phase transition during part of which the pressure is negative. The model displays a flow of energy from curvature to matter such that the entropy of matter is not conserved.- COSMOLOGICAL MODEL
- ASTROPHYSICS: CRITICAL PHENOMENA
- TENSOR: ENERGY-MOMENTUM
- ENTROPY
- MATTER: PRODUCTION
- PRODUCTION: MATTER
- ENERGY: DENSITY
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