0209119v1

related topics
{equation, function, exp}
{energy, state, states}
{operator, operators, space}
{state, algorithm, problem}
{temperature, thermal, energy}
{energy, gaussian, time}
{time, decoherence, evolution}
{observables, space, algebra}
{measurement, state, measurements}
{phase, path, phys}
{level, atom, field}

A Renormalisation Approach to Effective Interactions in Hilbert Space

J. Richert

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.

oai_identifier:
oai:arXiv.org:quant-ph/0209119
categories:
quant-ph nucl-th physics.atm-clus
comments:
5 pages, no figures, LateX file
arxiv_id:
quant-ph/0209119
created:
2002-09-23

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