Deflationary Universe Scenario

Details Deflationary Universe Scenario Deflationary Universe Scenario

1993-06-04

arxiv.org/abs/gr-qc/9306008v2

Phys.Lett.B315:40-45,1993

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

18p, KUNS-1201 Plain TeX, phyzzx. Reference file is included which previously was missed

Scientific paper

10.1016/0370-2693(93)90155-B

We show that it is possible to realize an inflationary scenario even without conversion of the false vacuum energy to radiation. Such cosmological models have a deflationary stage in which $Ha^2$ is decreasing and radiation produced by particle creation in an expanding Universe becomes dominant. The preceding inflationary stage ends since the inflaton potential becomes steep. False vacuum energy is finally (partly) converted to the inflaton kinetic energy , the potential energy rapidly decreases and the Universe comes to the deflationary stage with a scale factor $a(t) \propto t^{1/3}$. Basic features and observational consequences of this scenario are indicated.

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