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
References in corpus (17)
- A Phantom Menace? Cosmological consequences of a dark energy component with super-negative equation of state
- k-Inflation
- Causality, Analyticity and an IR Obstruction to UV Completion
- Unification of Dark Matter and Dark Energy: the Inhomogeneous Chaplygin Gas
- The phantom menaced: constraints on low-energy effective ghosts
- Scalar fields, energy conditions, and traversable wormholes
- A new view of k-essence
- Gradient instability for w < -1
- Instabilities and the null energy condition
- Spontaneous Lorentz Breaking at High Energies
- The New Ekpyrotic Ghost
- Holes in the ghost condensate
- The Classical Stability Of The Ghost Condensate
- Towards a Higgs phase of gravity in string theory
- Towards a High Energy Theory for the Higgs Phase of Gravity
- A Note on Spontaneously Broken Lorentz Invariance
- Regulator Dependence of the Proposed UV Completion of the Ghost Condensate