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Generation of seed perturbations from Quantum Cosmology

Tarun Souradeep
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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\^ıtre 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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Tarun Souradeep. 1992-08-11. Generation of seed perturbations from Quantum Cosmology. https://doi.org/10.1086/172141

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