A resolution of the trans‐Planckian problem in the Rh = ct universe
Author
Melia, FulvioAffiliation
Univ Arizona, Dept PhysIssue Date
2020-10-18Keywords
cosmological parameterscosmology: observations
cosmology: early universe
cosmology: theory
gravitation
cosmology: inflation
Metadata
Show full item recordPublisher
WILEY-V C H VERLAG GMBHJournal
ASTRONOMISCHE NACHRICHTENRights
© 2020 Wiley‐VCH GmbH.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
The recent measurement of a cutoffk(min)in the fluctuation power spectrumP(k)of the cosmic microwave background may vitiate the possibility that slow-roll inflation can simultaneously solve the horizon problem and account for the formation of structure via the growth of quantum fluctuations in the inflaton field. Instead, we show thatk(min)may be interpreted more successfully in theR(h) = ctcosmology as the first mode exiting from the Planck scale into the semiclassical universe shortly after the Big Bang. In so doing, we demonstrate that such a scenario completely avoids the well-known trans-Planckian problem plaguing standard inflationary cosmology.Note
12 month embargo; published 18 October 2020ISSN
0004-6337EISSN
1521-3994Version
Final accepted manuscriptSponsors
Amherst Collegeae974a485f413a2113503eed53cd6c53
10.1002/asna.202013813