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On the wave-like energy estimates of Klein-Gordon type equations with time dependent potential

We consider the conditions for the time dependent potential in which the energy of the Cauchy problem of Klein-Gordon type equation asymptotically behaves like the energy of the wave equation. The conclusion of this paper is that the condition is not always given by the order of the potential itself, but should be given by "generalized zero mean condition", which is represented by the integral of the potential. We also introduce "generalized modified energy conservation" in order to describe the appropriate energy for our problem.

preprint2022arXivOpen access
Kazunori GotoFumihiko Hirosawa
math.AP
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Kazunori GotoFumihiko Hirosawa

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