High-order variational calculation for the frequency of time-periodic solutions.
We develop a convergent variational perturbation theory for the frequency of time-periodic solutions of nonlinear dynamical systems. The power of the theory is illustrated by applying it to the Duffing oscillator.
Pelster
Axel
A
Institute of Theoretical Physics, Free University of Berlin, Arnimallee 14, D-14195 Berlin, Germany. pelster@physik.fu-berlin.de
Kleinert
Hagen
H
Schanz
Michael
M