期刊
PHYSICS LETTERS B
卷 697, 期 4, 页码 351-356出版社
ELSEVIER
DOI: 10.1016/j.physletb.2011.02.024
关键词
Dark energy; Confinement; Cosmology; QCD; Lattice
资金
- Natural Science and Engineering Research Council of Canada
The infrared divergence of the self-energy of a color charge is due to an enhancement of the long wavelength modes of the color Coulomb potential field. There are also long wavelength contributions to the QCD vacuum energy that are similarly enhanced. Vacuum modes of Hubble scale wavelengths may be affected in a cosmological setting and this can lead to a residual positive energy density of the form H-d Lambda(4-d)(QCD) Lattice studies constrain d. If the dark energy takes this form then the universe is driven towards de Sitter expansion, and we briefly study this cosmology when d is just slightly above unity. (C) 2011 Elsevier B.V. All rights reserved.
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