604 citations · 4.7k across the 66 of their papers we have counts for
67 papers
Space- vs Time-dependence in taming the infrared instability of projectable Hořava Gravity
Shinji Mukohyama, Jury Radkovski, Sergey Sibiryakov
Minkowski spacetime exhibits infrared instability in projectable Ho\v rava gravity in (3+1) dimensions. To be phenomenologically viable, the instability should be either hidden by…
Asymptotic freedom in (3+1)-dimensional projectable Horava gravity: connecting ultraviolet to infrared
Andrei O. Barvinsky, Alexander V. Kurov, Sergey M. Sibiryakov
We investigate the renormalization group flow of projectable Horava gravity in dimensions generated by marginal operators with respect to the Lifshitz scaling. The flow pos…
Effective Action for Dissipative and Nonholonomic Systems
Afshin Besharat, Jury Radkovski, Sergey Sibiryakov
We show that the action of a dynamical system can be supplemented by an effective action for its environment to reproduce arbitrary coordinate dependent ohmic dissipation and gyros…
Scattering amplitudes in high-energy limit of projectable Horava gravity
Jury I. Radkovski, Sergey M. Sibiryakov
We study the high-energy limit of projectable Ho\v rava gravity using on-shell graviton scattering amplitudes. We compute the tree-level amplitudes using symbolic computer algebra…
Boson Star Normal Modes
James Hung-Hsu Chan, Sergey Sibiryakov, Wei Xue
Boson stars are gravitationally bound objects that arise in ultralight dark matter models and form in the centers of galactic halos or axion miniclusters. We systematically study t…
Renormalizing one-point probability distribution function for cosmological counts in cells
Anton Chudaykin, Mikhail M. Ivanov, Sergey Sibiryakov
We study the one-point probability distribution function (PDF) for matter density averaged over spherical cells. The leading part to the PDF is defined by spherical collapse dynami…