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Universe 2016, 2(1), 4; doi:10.3390/universe2010004

Quantum Yang–Mills Dark Energy

Department of Astronomy and Theoretical Physics, Lund University, SE-223 62 Lund, Sweden
Academic Editors: Kazuharu Bamba and Sergei D. Odintsov
Received: 30 December 2015 / Revised: 2 February 2016 / Accepted: 3 February 2016 / Published: 23 February 2016
(This article belongs to the Special Issue Modified Gravity Cosmology: From Inflation to Dark Energy)
View Full-Text   |   Download PDF [446 KB, uploaded 23 February 2016]

Abstract

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. View Full-Text
Keywords: Einstein–Yang–Mills theory; classical Yang–Mills fields; dark energy; gauge-flation; gluon condensate; effective Yang–Mills action; 98.80.Qc; 98.80.Jk; 98.80.Cq; 98.80.Es Einstein–Yang–Mills theory; classical Yang–Mills fields; dark energy; gauge-flation; gluon condensate; effective Yang–Mills action; 98.80.Qc; 98.80.Jk; 98.80.Cq; 98.80.Es
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Pasechnik, R. Quantum Yang–Mills Dark Energy. Universe 2016, 2, 4.

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