361 citations · 1.3k across the 13 of their papers we have counts for
13 papers
Quantizing non-projectable Hořava gravity with Lagrangian path integral
D. Blas, F. Del Porro, M. Herrero-Valea +2
We formulate the quantum version of non-projectable Hořava gravity as a Lagrangian theory with a path integral in the configuration space with an ultra-local in time, but non-local…
On holography for (pseudo-)conformal cosmology
M. Libanov, V. Rubakov, S. Sibiryakov
We propose a holographic dual for (pseudo-)conformal cosmological scenario, with a scalar field that forms a moving domain wall in adS_5. The domain wall separates two vacua with u…
On the Extra Mode and Inconsistency of Horava Gravity
D. Blas, O. Pujolas, S. Sibiryakov
We address the consistency of Horava's proposal for a theory of quantum gravity from the low-energy perspective. We uncover the additional scalar degree of freedom arising from the…
Self-accelerated brane Universe with warped extra dimension
D. S. Gorbunov, S. M. Sibiryakov
We propose a cosmological model which exhibits the phenomenon of self-acceleration: the Universe is attracted to the phase of accelerated expansion at late times even in the absenc…
Spontaneous breaking of Lorentz invariance, black holes and perpetuum mobile of the 2nd kind
S. L. Dubovsky, S. M. Sibiryakov
We study the effect of spontaneous breaking of Lorentz invariance on black hole thermodynamics. We consider a scenario where Lorentz symmetry breaking manifests itself by the diffe…
More on ghosts in DGP model
Dmitry Gorbunov, Kazuya Koyama, Sergei Sibiryakov
It is shown by an explicit calculation that the excitations about the self-accelerating cosmological solution of the Dvali--Gabadaze--Porrati model contain a ghost mode. This raise…