arXiv:0801.3942·v4·General Relativity and Quantum Cosmology
Ghost Condensate Busting
Neven Bilić🇭🇷 · Gary B. Tupper🇿🇦 · Raoul D. Viollier🇿🇦
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.
Comments: 9 pages, minor corrections, a reference added, the discussion on consistency of the Thomas-Fermi approximation expanded, to appear in JCAP