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Higher order asymptotic expansion of solutions to abstract linear hyperbolic equations (1912.00217v1)
Published 30 Nov 2019 in math.AP
Abstract: The paper concerned with higher order asymptotic expansion of solutions to the Cauchy problem of abstract hyperbolic equations of the form $u''+Au+u'=0$ in a Hilbert space, where $A$ is a nonnegative selfadjoint operator. The result says that by assuming the regularity of initial data, asymptotic profiles (of arbitrary order) are explicitly written by using the semigroup $e{-tA}$ generated by $-A$. To prove this, a kind of maximal regularity for $e{-tA}$ is used.