Fresh inflation with increasing cosmological parameter

Details Fresh inflation with increasing cosmological parameter Fresh inflation with increasing cosmological parameter

2002-11-12

arxiv.org/abs/gr-qc/0211044v2

Phys.Rev. D67 (2003) 027303

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, 5 figures (accepted in Phys. Rev. D)

Scientific paper

10.1103/PhysRevD.67.027303

I study a fresh inflationary model with an increasing F-cosmological parameter. The model provides sufficiently e-folds to solve the flatness/horizon problem and the density fluctuations agree with experimental values. The temperature increases during fresh inflation and reach its maximum value when inflation ends. I find that entropy perturbations always remain below $10^{-4}$ during fresh inflation and become negligible when fresh inflation ends. Hence, the adiabatic fluctuations dominate the primordial spectrum at the end of fresh inflation.

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