Generation of seed perturbations from Quantum Cosmology

Details Generation of seed perturbations from Quantum Cosmology Generation of seed perturbations from Quantum Cosmology

1992-08-11

arxiv.org/abs/gr-qc/9208003v1

Astrophys.J.402:375-381,1993

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Plain Tex 24 Pages

Scientific paper

10.1086/172141

The origin of seed perturbations in the Universe is studied within the framework of a specific minisuperspace model. It is shown that the `creation' of the Universe as a result of a quantum transition from a flat empty spacetime would lead to a flat FLRW (Friedmann Lema\^\i tre Robertson-Walker) Universe with weak inhomogeneous perturbations at large wavelengths. The power spectrum of these perturbations is found to be scale invariant at horizon crossing (i.e., the Harrison-Zeldovich spectrum). It is also recognised that the seed perturbations generated in our model would be generically of the isocurvature kind.

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