Comparison of alternative improved perturbative methods for nonlinear oscillations

被引：24

作者：

Amore, P

Raya, A

Fernández, FM

机构：

[1] Univ Colima, Fac Ciencias, Colima, Mexico

[2] Natl Univ La Plata, CONICET, INIFTA, RA-1900 La Plata, Argentina

来源：

PHYSICS LETTERS A | 2005年 / 340卷 / 1-4期

关键词：

D O I：

10.1016/j.physleta.2005.04.004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We discuss and compare two alternative perturbation approaches for the calculation of the period of nonlinear systems based on the Lindstedt-Poincare technique. As illustrative examples we choose one-dimensional anharmonic oscillators and the Van der Pol equation. Our results show that each approach is better for just one type of model considered here. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：201 / 208

页数：8

共 17 条

[11] Convergent resummed linear δ expansion in the critical O(N) (φi2)3d2 model -: art. no. 210403 [J].