116 citations · 702 across the 31 of their papers we have counts for
31 papers
Cosmological k-essence condensation
Neven Bilic, Gary B. Tupper, Raoul D. Viollier
We consider a model of dark energy/matter unification based on a k-essence type of theory similar to tachyon condensate models. Using an extension of the general relativistic spher…
White dwarf axions, PAMELA data, and flipped-SU(5)
Kyu Jung Bae, Ji-Haeng Huh, Jihn E. Kim +2
Recently, there are two hints arising from physics beyond the standard model. One is a possible energy loss mechanism due to emission of very weakly interacting light particles fro…
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…
A Symbiotic Scenario for the Rapid Formation of Supermassive Black Holes
M. C. Richter, G. B. Tupper, R. D. Viollier
The most massive black holes, lurking at the centers of large galaxies, must have formed less than a billion years after the big bang, as they are visible today in the form of brig…
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…