3 papers
math-ph2005
Renormgroup symmetry for solution functionals
D. V. Shirkov, V. F. Kovalev
The paper contains generalization of the renormgroup algorithm for boundary value problems of mathematical physics and related concept of the renormgroup symmetry, formulated earli…
math-ph2001
Symmetries of Integro-Differential Equations: A Survey of Methods Illustrated by the Benney Equations
N. H. Ibragimov, V. F. Kovalev, V. V. Pustovalov
Classical Lie group theory provides a universal tool for calculating symmetry groups for systems of differential equations. However Lie's method is not as much effective in the cas…
hep-ph2000
Inflationary Brans-Dicke Quantum Universe II: Particular evolutions and stability analysis
B. Geyer, V. F. Kovalev
We made an analysis of the equations of motion which are obtained from the one - loop effective action for Brans-Dicke gravity with N dilaton - coupled massless fermions in a time-…