Power spectrum for perturbations in an inflationary model for a closed universe-Reference-Cited by-同舟云学术

Power spectrum for perturbations in an inflationary model for a closed universe

Published:2022-03-28 Issue:4 Volume:54 Page:
ISSN:0001-7701
Container-title:General Relativity and Gravitation
language:en
Short-container-title:Gen Relativ Gravit

Author:

Kiefer Claus^ORCID,Vardanyan Tatevik

Abstract

AbstractWe derive the power spectrum of primordial quantum fluctuations in an inflationary universe for curvature parameter

$${\mathcal {K}}=1$$

K = 1 . This is achieved through a Born–Oppenheimer type of approximation scheme from the Wheeler–DeWitt equation of canonical quantum gravity using gauge-invariant variables. Compared to the flat model, the closed model exhibits a deficit of power at large scales.

Funder

Universität zu Köln

Publisher

Springer Science and Business Media LLC

Subject

Physics and Astronomy (miscellaneous)

Link

https://link.springer.com/content/pdf/10.1007/s10714-022-02918-3.pdf

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