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Typical working day..

Roman Pasechnik

Senior lecturer

Typical working day..

Quantum Yang-Mills dark energy

Author

  • Roman Pasechnik

Summary, in English

In this short review, I discuss basic qualitative characteristics of quantum non-Abelian gauge dynamics in the non-stationary background of the expanding Universe in the framework of the standard Einstein-Yang-Mills formulation. A brief outlook of existing studies of cosmological Yang-Mills fields and their properties will be given. Quantum effects have a profound impact on the gauge field-driven cosmological evolution. In particular, a dynamical formation of the spatially-homogeneous and isotropic gauge field condensate may be responsible for both early and late-time acceleration, as well as for dynamical compensation of non-perturbative quantum vacua contributions to the ground state of the Universe. The main properties of such a condensate in the effective QCD theory at the flat Friedmann-Lemaítre-Robertson-Walker (FLRW) background will be discussed within and beyond perturbation theory. Finally, a phenomenologically consistent dark energy can be induced dynamically as a remnant of the QCD vacua compensation arising from leading-order graviton-mediated corrections to the QCD ground state.

Department/s

  • Theoretical Particle Physics

Publishing year

2016-01-01

Language

English

Publication/Series

Universe

Volume

2

Issue

1

Document type

Journal article review

Publisher

Multidisciplinary Digital Publishing Institute (MDPI)

Topic

  • Subatomic Physics

Keywords

  • Classical Yang-Mills fields
  • Dark energy
  • Effective Yang-Mills action
  • Einstein-Yang-Mills theory
  • Gauge-flation
  • Gluon condensate

Status

Published

ISBN/ISSN/Other

  • ISSN: 2218-1997