56 citations · 121 across the 8 of their papers we have counts for
4 papers · 1 filter
Cosmological tachyon condensation
Neven Bilic, Gary B. Tupper, Raoul D. Viollier
We consider the prospects for dark matter/energy unification in k-essence type theories. General mappings are established between the k-essence scalar field, the hydrodynamic and b…
Ghost Condensate Busting
Neven Bilić, Gary B. Tupper, Raoul D. Viollier
Applying the Thomas-Fermi approximation to renormalizable field theories, we construct ghost condensation models that are free of the instabilities associated with violations of th…
Chaplygin Gas Cosmology - Unification of Dark Matter and Dark Energy
Neven Bilic, Gary B. Tupper, Raoul D. Viollier
The models that unify dark matter and dark energy based upon the Chaplygin gas fail owing to the suppression of structure formation by the adiabatic speed of sound. Including strin…
Free Energy of Gravitating Fermions
Neven Bilic, Raoul Viollier
We study a system of self-gravitating massive fermions in the framework of the general-relativistic Thomas-Fermi model. We postulate the free energy functional and show that its ex…