Title

On Lewis Exact Invariant For The Linear Harmonic-Oscillator With Time-Dependent Frequency

Title - Alternative

Phys. Lett. A

Keywords

Physics, Multidisciplinary

Abstract

In this paper we purport to show that Lewis' exact invariant for a linear harmonic oscillator with a time-dependent frequency arises as a consequence of the invariance of the problem under local Lie groups of transformations. We will also show that Lewis' invariant can be deduced via a systematic perturbation theory for the case with slowly-varying frequency as a power series in the small parameter epsilon characterizing the slow variations in the frequency.

Publication Title

Physics Letters A

Volume

154

Issue/Number

1-2

Publication Date

1-1-1991

Document Type

Article

Language

English

First Page

24

Last Page

28

WOS Identifier

WOS:A1991FF13500006

ISSN

0375-9601

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