Dispersion relation of the nonlinear Klein-Gordon equation through a variational method.

نویسندگان

  • Paolo Amore
  • Alfredo Raya
چکیده

We derive approximate expressions for the dispersion relation of the nonlinear Klein-Gordon equation in the case of strong nonlinearities using a method based on the linear delta expansion. All the results obtained in this article are fully analytical, never involve the use of special functions, and can be used to obtain systematic approximations to the exact results to any desired degree of accuracy. We compare our findings with similar results in the literature and show that our approach leads to better and simpler results.

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عنوان ژورنال:
  • Chaos

دوره 16 1  شماره 

صفحات  -

تاریخ انتشار 2006