A Renormalisation Approach to Effective Interactions in Hilbert Space

J. Richert

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A Renormalisation Approach to Effective Interactions in Hilbert Space

J. Richert

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Abstract

The low-lying bound states of a microscopic quantum many-body system of $n$ particles and the related physical observables can be worked out in a truncated $n$--particle Hilbert space. We present here a non-perturbative analysis of this problem which relies on a renormalisation concept and work out the link with perturbative approaches.

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J. Richert. 2002-09-23. A Renormalisation Approach to Effective Interactions in Hilbert Space. https://arxiv.org/abs/quant-ph/0209119

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