42 citations · 72 across the 4 of their papers we have counts for
4 papers
Numerical Simulation of Cosmic String Motion in Peres Background
Sergey Roshchupkin, Alexey Zhovtan
The dynamics of closed cosmic strings in Peres background, using finite-difference method, has been considered. It is shown that motion of the strings is very complicated and its p…
Variational principle and a perturbative solution of non-linear string equations in curved space
S. N. Roshchupkin, A. A. Zheltukhin
String dynamics in a curved space-time is studied on the basis of an action functional including a small parameter of rescaled tension , where is a metric param…
On a Possibility of Membrane Cosmology
S. N. Roshchupkin, A. A. Zheltukhin
Tensionless null p-branes in arbitrary cosmological backgrounds are considered and their motion equations are solved. It is shown that an ideal fluid of null p-branes may be consid…
Friedmann Universes and Exact Solutions in String Cosmology
S. N. Roshchupkin, A. A. Zheltukhin
We show that the classical null strings generate the Hilbert-Einstein gravity corresponding to D-dimensional Friedmann universes.