72 citations
13 papers
Causality properties of topologically nontrivial space-time models
M. Yu. Konstantinov
Some problems of the space-time causal structure are discussed using models with traversable wormholes. For this purpose the conditions of traversable wormhole matching with the ex…
Test of universality hypothesis for scalar potential between quarks
S. V. Semenov, V. V. Khruschev
The universality hypothesis for scalar confining potential between quark and antiquark with different flavours is confirmed within 0.05 level of relativity errors.
Billiard Representation for Multidimensional Quantum Cosmology near the Singularity
V. D. Ivashchuk, V. N. Melnikov
The degenerate Lagrangian system describing a lot of cosmological models is considered. When certain restrictions on the parameters of the model are imposed, the dynamics of the mo…
Extra Dimensions and Possible Space-Time Signature Changes
K. A. Bronnikov
Exact static, spherically symmetric solutions to the Einstein-Maxwell-scalar equations, with a dilatonic-type scalar-vector coupling, in -dimensional gravity with a chain of …
Billiard Representation for Multidimensional Cosmology with Multicomponent Perfect Fluid near the Singularity
V. D. Ivashchuk, V. N. Melnikov
The multidimensional cosmological model describing the evolution of Einstein spaces in the presence of multicomponent perfect fluid is considered. When certain restrictions on…
Multidimensional Cosmology with Multicomponent Perfect Fluid and Toda Lattices
V. R. Gavrilov, V. D. Ivashchuk, V. N. Melnikov
The integration procedure for multidimensional cosmological models with multicomponent perfect fluid in spaces of constant curvature is developed. Reduction of pseudo-Euclidean Tod…