The day the universes interacted: quantum cosmology without a wave function

• Published in: The European physical journal. C, Particles and fields Particles and fields, 2019-09, Vol.79 (9), p.1-19, Article 771
• Main Authors: Yurov, A. V., Yurov, V. A.
• Format: Article
• Language: English
• Subjects: Analysis; Astronomy; Astrophysics and Cosmology; Cosmology; Dark matter; Elementary Particles; Hadrons; Heavy Ions; Measurement Science and Instrumentation; Nuclear Energy; Nuclear Physics; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum mechanics; Quantum theory; Radiation, Background; Regular Article - Theoretical Physics; String Theory; Wave functions
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-019-7261-y

In this article we present a new outlook on the cosmology, based on the quantum model proposed by Michael and Hall (Phys Rev X 4(1–17):041013, 2014 ). In continuation of the idea of that model we consider finitely many classical homogeneous and isotropic universes whose evolutions are determined by the standard Einstein–Friedmann equations but that also interact with each other quantum-mechanically via the mechanism proposed in Michael and Hall [ 1 ]. The crux of the idea lies in the fact that unlike every other interpretation of the quantum mechanics, the Hall, Deckert and Wiseman model requires no decoherence mechanism and thus allows the quantum mechanical effects to manifest themselves not just on micro-scale, but on a cosmological scale as well. We further demonstrate that the addition of this new quantum-mechanical interaction lead to a number of interesting cosmological predictions, and might even provide natural physical explanations for the phenomena of “dark matter” and “phantom fields”.