Scattering Spaces and a Decomposition of Continuous Spectral Subspace

Details Scattering Spaces and a Decomposition of Continuous Spectral Subspace Scattering Spaces and a Decomposition of Continuous Spectral Subspace

1999-12-31

arxiv.org/abs/math/9912244v1

Mathematics

Spectral Theory

36 pages, AmSTeX

Scientific paper

We introduce the notion of scattering space $S_b^r$ for $N$-body quantum mechanical systems, where $b$ is a cluster decomposition with $2\le |b|\le N$ and $r$ is a real number $0\le r\le 1$. Utilizing these spaces, we give a decomposition of continuous spectral subspace by $S_b^1$ for $N$-body quantum systems with long-range pair potentials $V_\alpha^L(x_\alpha)=O(|x_\al|^{-\ep})$. This is extended to a decomposition by $S_b^r$ with $0\le r\le 1$ for some long-range case. We also prove a characterization of ranges of wave operators by $S_b^0$.

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