6 papers
Superheavy dark matter in cosmology with conformal anomaly
E. V. Arbuzova, A. D. Dolgov, R. S. Singh
Cosmological evolution and particle creation in -modified gravity are considered for the case of the dominant decay of the scalaron into a pair of gauge bosons due to conforma…
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…
Dark matter in cosmology
E. V. Arbuzova, A. D. Dolgov, R. S. Singh
Production of massive stable relics in -modified gravity is considered. It is shown that the cosmological evolution and kinetics of massive species differs significantly from…
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…
Problems of spontaneous and gravitational baryogenesis
E. V. Arbuzova, A. D. Dolgov
Spontaneous and closely related to it gravitational baryogenesis are critically analyzed. It is shown that the coupling of the curvature scalar to baryonic current, which induces n…