15 citations · 42 across the 7 of their papers we have counts for
22 papers · 1 filter
Non-singular solutions in multidimensional model with scalar fields and exponential potential
J. -M. Alimi, V. D. Ivashchuk, V. N. Melnikov
Using developed earlier our methods for multidimensional models \cite{M1,M2,M3} a family of cosmological-type solutions in D-dimensional model with two sets of scalar fields \vecϕ…
Multicomponent perfect fluid with variable parameters in n Ricci-flat spaces
J. -M. Alimi, V. R. Gavrilov, V. N. Melnikov
D-dimensional cosmological model describing the evolution of a multicomponent perfect fluid with variable barotropic parameters in n Ricci-flat spaces is investigated. The equation…
General solutions for flat Friedmann universe filled by perfect fluid and scalar field with exponential potential
H. Dehnen, V. R. Gavrilov, V. N. Melnikov
We study integrability by quadrature of a spatially flat Friedmann model containing both a minimally coupled scalar field with an exponential potential $V(ϕ)\sim\exp[-\sqrt{6}σ…
On black hole solutions in model with anisotropic fluid
H. Dehnen, V. D. Ivashchuk, V. N. Melnikov
A family of spherically symmetric solutions in the model with 1-component anisotropic fluid is considered. The metric of the solution depends on a parameter q > 0 relating radial p…
Possible time variations of G in scalar-tensor theories of gravity
K. A. Bronnikov, V. N. Melnikov, Mario Novello
We estimate the possible variations of the gravitational constant G in the framework of a generalized (Bergmann-Wagoner-Nordtvedt) scalar-tensor theory of gravity on the basis of t…
Problems of G and multidimensional models
V. N. Melnikov, V. D. Ivashchuk
The relations for G-dot in multidimensional model with Ricci-flat internal space and multicomponent perfect fluid are obtained. A two-component example: dust + 5-brane, is consider…