Decay estimates for a Klein-Gordon model with time-periodic coefficients
arXiv:2001.06837 · doi:10.1007/978-3-030-61346-4_14
Abstract
In this paper we consider a Klein-Gordon model with time-dependent periodic coefficients. The aim is to investigate how the presence of the mass term influences energy estimates with respect to the case of vanishing mass, already treated in [18]. The approach is based on a diagonalisation argument for high frequencies and a contradiction argument for bounded frequencies.