Generation of seed perturbations from Quantum Cosmology
General Relativity and Quantum Cosmology
2008-11-26 v1 Astrophysics
Abstract
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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@article{arxiv.gr-qc/9208003,
title = {Generation of seed perturbations from Quantum Cosmology},
author = {Tarun Souradeep},
journal= {arXiv preprint arXiv:gr-qc/9208003},
year = {2008}
}
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