# Hokkaido Mathematical Journal

## Hokkaido Mathematical Journal, 39 (2010) pp.239-259

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### Abstract

In this paper we discuss the limiting absorption principle (l.a.p.) of the second quantization of semi-bounded self-adjoint operators. We show that the l.a.p. for a self-adjoint operator on a basic Hilbert space $\mathcal{H}$ is inherited'' to the one for its second quantization on a Fock space $\mathcal{F}(\mathcal{H})$. In order to show such a result, we examine the resolvent of $n$-body problem and take the limit of the infinite direct sum of those operators in a suitable subspace of $\mathcal{F}(\mathcal{H})$.

MSC(Primary) 47B15(MSC2000), 48B25(MSC2000) limiting absorption principle; resolvent estimates;