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Information × Registration Number 0221U106036, 0120U104854 , R & D reports Title Light dark matter and dynamical dark energy in the Universe popup.stage_title Head Shtanov Yurii V., Доктор фізико-математичних наук Registration Date 27-09-2021 Organization М.М.Bogolyubov Institute of Theoretical Physics of the National Academy of Sciences of Ukraine popup.description2  Physical effects and artifacts of thermal velocities in N-body cosmological simulations of warm dark matter are calculated. Analysis of rotation curves of a sample of galaxies from the SPARC database is carried out. The parameters of the density profile of dark matter in the Virgo cluster are estimated. A new scenario is proposed in which the scalaron of the f(R) gravity theory plays the role of light dark matter. A braneworld model was tested by cosmological observations for consistency with the measurements of the Hubble constant. A method for determining the scalar field potentials that provide a given dependence H(z) was developed. For spherically symmetric static configurations with a scalar field, an image of a thin accretion disk with different types of stable circular orbits is constructed. Qualitative properties of the solutions of Einstein equations for a homogeneous Bianchi type I model with an arbitrary barotropic equation of state of dark matter and dark energy are determined. Thermodynamical properties of the system of interacting bosons are investigated. Product Description popup.authors Zhdanov Valerii I. Parnovsky Sergei L. Rudakovskyi Anton V. Savchenko Denys O. Stashko Oleksandr S. Khelashvili Mariia V. Shtаnov Yurii V. popup.nrat_date 2021-09-27 Close