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  • Letter

Reduction of primordial chaos by generic quantum effects

Martin Bojowald*

David Brizuela†

Paula Calizaya Cabrera‡

Sara F. Uria§

  • Institute for Gravitation and the Cosmos, The Pennsylvania State University, 104 Davey Lab, University Park, Pennsylvania 16802, USA

  • Department of Physics and EHU Quantum Center, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain

  • Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA

  • Department of Physics and EHU Quantum Center, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain

  • *bojowald@psu.edu
  • †david.brizuela@ehu.eus
  • ‡pcaliz1@lsu.edu
  • §sara.fernandezu@ehu.eus
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Phys. Rev. D 108, L061501 – Published 7 September, 2023

DOI: https://doi.org/10.1103/PhysRevD.108.L061501

Abstract

According to general relativity, the generic early Universe dynamics is chaotic. Various quantum-gravity effects have been suggested that may change this behavior in different ways. Here, it is shown how key mathematical properties of the classical dynamics can be extended to evolving quantum states using quasiclassical methods, making it possible to apply the established dynamical-systems approach to chaos even to quantum evolution. As a result, it is found that quantum fluctuations contribute to the reduction of the primordial chaos in early Universe models.

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Chaotic behavior of the Bianchi IX model under the influence of quantum effects

Martin Bojowald, David Brizuela, Paula Calizaya Cabrera, and Sara F. Uria
Phys. Rev. D 109, 044038 (2024)

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Phys. Rev. D 108, L061501– Published 7 September, 2023
  • Received 24 January 2023
  • Accepted 27 July 2023
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