782 citations · 2.9k across the 55 of their papers we have counts for
52 papers
Generating cosmological perturbations in non-singular Horndeski cosmologies
Y. Ageeva, P. Petrov, V. Rubakov
We construct a concrete model of Horndeski bounce with strong gravity in the past. Within this model we show that the correct spectra of cosmological perturbations may be generated…
Superluminality in DHOST theory with extra scalar
S. Mironov, V. Rubakov, V. Volkova
We consider DHOST Ia theory interacting gravitationally with an additional conventional scalar field minimally coupled to gravity. At the linearized level of perturbations about co…
Horndeski genesis: consistency of classical theory
Y. Ageeva, P. Petrov, V. Rubakov
Genesis within the Horndeski theory is one of possible scenarios for the start of the Universe. In this model, the absence of instabilities is obtained at the expense of the proper…
Superluminality in beyond Horndeski theory with extra scalar field
S. Mironov, V. Rubakov, V. Volkova
We study the superluminality issue in beyond Horndeski theory with additional scalar field, which is minimally coupled to gravity and has no second derivatives in the Lagrangian. W…
Subluminal cosmological bounce beyond Horndeski
S. Mironov, V. Rubakov, V. Volkova
We address the issue of potential superluminal propagation of gravitational waves in backgrounds neighboring the previously suggested bounce [arXiv:1807.08361] in beyond Horndeski…
Cosmological scenarios with bounce and Genesis in Horndeski theory and beyond: An essay in honor of I.M. Khalatnikov on the occasion of his 100th birthday
S. Mironov, V. Rubakov, V. Volkova
This essay is a brief review of the recent studies of non-singular cosmological scenarios with bounce and Genesis and their stability in a subclass of scalar-tensor theories with h…