Ghost Condensate Busting
arXiv:0801.3942 · doi:10.1088/1475-7516/2008/09/002
Abstract
Applying the Thomas-Fermi approximation to renormalizable field theories, we construct ghost condensation models that are free of the instabilities associated with violations of the null-energy condition.
9 pages, minor corrections, a reference added, the discussion on consistency of the Thomas-Fermi approximation expanded, to appear in JCAP