116 citations · 308 across the 9 of their papers we have counts for
9 papers
Some like it hot: heals Higgs inflation, but does not cool it
Fedor Bezrukov, Dmitry Gorbunov, Chris Shepherd +1
Strong coupling in Higgs inflation at high energies hinders a joint description of inflation, reheating and low-energy dynamics. The situation may be improved with a proper UV comp…
Scalaron the healer: removing the strong-coupling in the Higgs- and Higgs-dilaton inflations
Dmitry Gorbunov, Anna Tokareva
We show that introducing -term makes the Higgs-inflation and Higgs-dilaton inflation consistent models: the strong coupling energy scales in scalar, gauge and gravity sectors…
On the dark radiation problem in the axiverse
Dmitry Gorbunov, Anna Tokareva
String scenarios generically predict that we live in a so called axiverse: the Universe with about a hundred of light axion species which are decoupled from the Standard Model part…
Polarization of photons emitted by decaying dark matter
W. Bonivento, D. Gorbunov, M. Shaposhnikov +1
Radiatively decaying dark matter may be searched through investigating the photon spectrum of galaxies and galaxy clusters. We explore whether the properties of dark matter can be…
Scalaron production in contracting astrophysical objects
Dmitry Gorbunov, Anna Tokareva
We study the creation of high energy SM particles in the Starobinsky model of dark energy (a variant of F(R)-gravity) inside the regions contracting due to the Jeans instability. I…
No Cosmic Rays from Curvature Oscillations during Structure Formation with -gravity
Dmitry Gorbunov, Anna Tokareva
The Starobinsky model of modified gravity suggested to explain dark energy may be also considered in the astrophysical context. Recently it has been pointed out that in contracting…
Scale-invariance as the origin of dark radiation?
Dmitry Gorbunov, Anna Tokareva
Recent cosmological data favour R^2-inflation and some amount of non-standard dark radiation in the Universe. We show that a framework of high energy scale invariance can explain t…
R^2-inflation with conformal SM Higgs field
Dmitry Gorbunov, Anna Tokareva
We introduce conformal coupling of the Standard Model Higgs field to gravity and discuss the subsequent modification of -inflation. The main observation is a lower temperature…
Positronium oscillations to Mirror World revisited
S. V. Demidov, D. S. Gorbunov, A. A. Tokareva
We present a calculation of the branching ratio of orthopositronium decay into an invisible mode, which is done in the context of Mirror World models, where ordinary positronium ca…