602 citations · 2.2k across the 28 of their papers we have counts for
28 papers
Nonsingular cosmological models with strong gravity in the past
Y. Ageeva, P. Petrov, V. Rubakov
In scalar-tensor Horndeski theories, nonsingular cosmological models - bounce and genesis - are problematic because of potential ghost and/or gradient instabilities. One way to get…
Toward evading the strong coupling problem in Horndeski genesis
Y. Ageeva, O. Evseev, O. Melichev +1
It is of interest to understand whether or not one can construct a classical field theory description of early cosmology which would be free of the initial singularity and stable t…
Cosmology and Dark Matter
V. A. Rubakov
Cosmology and astroparticle physics give strongest possible evidence for the incompleteness of the Standard Model of particle physics. Leaving aside misterious dark energy, which m…
Conformal Universe as false vacuum decay
M. Libanov, V. Rubakov
We point out that the (pseudo-)conformal Universe scenario may be realized as decay of conformally invariant, metastable vacuum, which proceeds via spontaneous nucleation and subse…
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…
The Null Energy Condition and its violation
V. A. Rubakov
We give a mini-review of scalar field theories with second-derivative Lagrangians, whose field equations are second order. Some of these theories admit solutions violating the Null…