Trotter product formula and linear evolution equations on Hilbert spaces On the occasion of the 100th birthday of Tosio Kato
Résumé
The paper is devoted to evolution equations of the form ∂ ∂t u(t) = −(A + B(t))u(t), t ∈ I = [0, T ], on separable Hilbert spaces where A is a non-negative self-adjoint operator and B(·) is family of non-negative self-adjoint operators such that dom(A α) ⊆ dom(B(t)) for some α ∈ [0, 1) and the map A −α B(·)A −α is Hölder continuous with the Hölder exponent β ∈ (0, 1). It is shown that the solution operator U(t, s) of the evolution equation can be approximated in the operator norm by a combination of semigroups generated by A and B(t) provided the condition β > 2α − 1 is satisfied. The convergence rate for the approximation is given by the Hölder exponent β. The result is proved using the evolution semigroup approach.
Domaines
Analyse fonctionnelle [math.FA]
Origine : Fichiers produits par l'(les) auteur(s)
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