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An SU(2) Gauge Principle for the CMB: Perspectives on Dark Sector of the Cosmological Model

Version 1 : Received: 27 July 2020 / Approved: 30 July 2020 / Online: 30 July 2020 (12:35:00 CEST)

A peer-reviewed article of this Preprint also exists.

Hofmann, R. An SU(2) Gauge Principle for the Cosmic Microwave Background: Perspectives on the Dark Sector of the Cosmological Model. Universe 2020, 6, 135. Hofmann, R. An SU(2) Gauge Principle for the Cosmic Microwave Background: Perspectives on the Dark Sector of the Cosmological Model. Universe 2020, 6, 135.

Journal reference: Universe 2020, 6, 135
DOI: 10.3390/universe6090135

Abstract

We review consequences for the radiation and dark sectors of the cosmological model arising from the postulate that the CMB is governed by an SU(2) rather than a U(1) gauge principle. We also speculate on the possibility of actively assisted structure formation due to the de-percolation of lump-like configurations of condensed ultralight axions with a Peccei-Quinn scale comparable to the Planck mass. The chiral-anomaly induced potential of the axion condensate receives contributions from SU(2)/SU(3) Yang-Mills factors of hierarchically separated scales which act in a screened (reduced) way in confining phases.

Subject Areas

light scalar fields; axial anomaly; SU(2) Yang-Mills thermodynamics; de-percolation of axionic lumps; cosmological and galactic dark-matter densities

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