Gluonic vacuum, q-theory, and the cosmological constant
arXiv:0811.4347 · doi:10.1103/PhysRevD.79.063527
Abstract
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_{QCD}^3 / E_{Planck}^2, with string tension K_{QCD} \approx (10^2 MeV)^2 and gravitational scale E_{Planck} \approx 10^{19} GeV. The only input for this estimate is general relativity, quantum chromodynamics, and the Hubble expansion of the present Universe.
20 pages; v6: published version
References in corpus (13)
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
- Constraining f(R) Gravity as a Scalar Tensor Theory
- f(R) Gravity and Chameleon Theories
- Self-tuning vacuum variable and cosmological constant
- Coulomb gauge gluon propagator and the Gribov formula
- Dynamic vacuum variable and equilibrium approach in cosmology
- Homogeneous and isotropic cosmologies with nonlinear electromagnetic radiation
- Evolution of density perturbations in decaying vacuum cosmology
- Evolution of density perturbations in decaying vacuum cosmology: The case of non-zero perturbations in the cosmological term
- f(R) Cosmology from q-Theory
- Equilibrium boundary conditions, dynamic vacuum energy, and the Big Bang
- Vacuum Energy, EoS, and the Gluon Condensate at Finite Baryon Density in QCD