Gluonic vacuum, q-theory, and the cosmological constant

Journal Article · Sun Mar 15 00:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.063527· OSTI ID:21260151

Klinkhamer, F R; Volovik, G E ^[1]

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1. Institute for Theoretical Physics, University of Karlsruhe (Thailand), 76128 Karlsruhe (Germany)

In previous work, q-theory was introduced to describe the gravitating macroscopic behavior of a conserved microscopic variable q. In this article, the gluon condensate of quantum chromodynamics is considered in terms of q-theory. The remnant vacuum energy density (i.e., cosmological constant) of an expanding universe is estimated as K{sub QCD}{sup 3}/E{sub Planck}{sup 2}, with string tension K{sub QCD}{approx_equal}(10{sup 2}MeV){sup 2} and gravitational scale E{sub Planck}{approx_equal}10{sup 19}GeV. The only input for this estimate is general relativity, quantum chromodynamics, and the Hubble expansion of the present Universe.

• OSTI ID: 21260151
• Journal Information: Physical Review. D, Particles Fields, Vol. 79, Issue 6; Other Information: DOI: 10.1103/PhysRevD.79.063527; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGICAL CONSTANT
ENERGY DENSITY
EXPANSION
GENERAL RELATIVITY THEORY
GLUON CONDENSATION
GRAVITATION
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
STRING MODELS
UNIVERSE