Renormalisation and fixed points in Hilbert Space

Details Renormalisation and fixed points in Hilbert Space Renormalisation and fixed points in Hilbert Space

2003-07-16

arxiv.org/abs/quant-ph/0307108v1

J.Phys.A37:4851-4860,2004

Physics

Quantum Physics

4 pages, 1 table

Scientific paper

10.1088/0305-4470/37/17/014

The energies of low-lying bound states of a microscopic quantum many-body
system of particles can be worked out in a reduced Hilbert space. We present
here and test a specific non-perturbative truncation procedure. We also show
that real exceptional points which may be present in the spectrum can be
identified as fixed points of coupling constants in the truncation procedure.

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