A resolution of the Trans-Planckian problem in the R_h=ct universe

Abstract

The recent measurement of a cutoff k_min in the fluctuation power spectrum P(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 that k_min may be interpreted more successfully in the R_h=ct cosmology, as the first mode exiting from the Planck scale into the semi-classical 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.

arXiv comment7 pages. Accepted for publication in Astronomische Nachrichten

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Cited by in corpus (4)

• Thermodynamics of the R_h=ct Universe: A Simplification of Cosmic Entropy
• Missing large-angle correlations versus even-odd point-parity imbalance in the cosmic microwave background
• A Comparative Test of the LCDM and R_h=ct Cosmologies Based on Upcoming Redshift Drift Measurements
• Holographic dark energy in a coasting cosmology