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Published November 1, 2007 | public
Journal Article Open

Centred approach to the period of anharmonic oscillators

Abstract

We present a simple method for obtaining a concise series expression for the period of one-dimensional classical oscillators. The series converges well for typical potentials and is of a form that is often suitable for obtaining approximate expressions for the period valid to any order in the amplitude desired. The method is most easily applied to even potentials. However, by employing the lower turning point expansion discussed in the appendices it may readily be applied even to those potentials where the lower turning point may not be solved for explicitly in terms of the upper turning point. We demonstrate the method by obtaining expressions for the periods of both the simple pendulum and tadpole orbits.

Additional Information

Copyright © Institute of Physics and IOP Publishing Limited 2007. Received 20 June 2007, in final form 2 August 2007. Published 7 September 2007. Print publication: Issue 6 (November 2007)

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