A Renormalisation Approach to Effective Interactions in Hilbert Space

Details A Renormalisation Approach to Effective Interactions in Hilbert Space A Renormalisation Approach to Effective Interactions in Hilbert Space

2002-09-23

arxiv.org/abs/quant-ph/0209119v1

Physics

Quantum Physics

5 pages, no figures, LateX file

Scientific paper

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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