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Vacuum energy problem in anti-de Sitter space
E. V. Arbuzova, A. D. Dolgov
We investigate the cosmological evolution of a universe with an initially large negative vacuum energy, corresponding to an anti-de Sitter (AdS) space-time. Such a universe inevita…
Dynamical mechanism of vacuum energy compensation
E. V. Arbuzova, A. D. Dolgov
The model of vacuum energy compensation due to interaction of a scalar field with curvature scalar of the form is proposed. It is shown that with a simple power…
Gravitational Baryogenesis: Problems and Possible Resolution
E. Arbuzova, A. Dolgov, K. Dutta +1
The coupling of baryonic current to the derivative of the curvature scalar, , inherent to gravitational baryogenesis (GBG), leads to a fourth order differential equation of moti…
Instabilities in modified theories of gravity
Elena Arbuzova
The review is devoted to consideration of possible observational consequences of modified gravity theories, suggested for explanation of the contemporary accelerated expansion of t…
Spontaneous and Gravitational Baryogenesis
E. V. Arbuzova
Some problems of spontaneous and gravitational baryogenesis are discussed. Gravity modification due to the curvature dependent term in gravitational baryogensis scenario is conside…
Distortion of the standard cosmology in R+R^2 theory
E. V. Arbuzova, A. D. Dolgov, R. S. Singh
Universe history in -gravity is studied from "beginning" up to the present epoch. It is assumed that initially the curvature scalar was sufficiently large to induce the pr…