Working Paper Article Version 1 This version is not peer-reviewed

A Resolution of the Trans-Planckian Problem in the Rh=ct Universe

Version 1 : Received: 10 February 2020 / Approved: 12 February 2020 / Online: 12 February 2020 (12:30:30 CET)

How to cite: Melia, F. A Resolution of the Trans-Planckian Problem in the Rh=ct Universe. Preprints 2020, 2020020160 Melia, F. A Resolution of the Trans-Planckian Problem in the Rh=ct Universe. Preprints 2020, 2020020160

Abstract

The recent measurement of a cutoff kmin 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 kmin may be interpreted more successfully in the Rh=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, with some additional clues that may motivate further development of Kaluza-Klein cosmologies, string theories and supergravity.

Subject Areas

Cosmology; Early Universe; Quantum Fluctuations

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