Quantum creation and inflationary universes: a critical appraisal

Details Quantum creation and inflationary universes: a critical appraisal Quantum creation and inflationary universes: a critical appraisal

2000-07-17

arxiv.org/abs/gr-qc/0007037v1

Phys.Rev. D62 (2000) 124010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

21 pages Latex

Scientific paper

10.1103/PhysRevD.62.124010

We contrast the possibility of inflation starting a) from the universe's inception or b) from an earlier non-inflationary state. Neither case is ideal since a) assumes quantum mechanical reasoning is straightforwardly applicable to the early universe; while case b) requires that a singularity still be present. Further, in agreement with Vachaspati and Trodden [1] case b) can only solve the horizon problem if the non-inflationary phase has equation of state $\gamma<4/3$.

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