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Low-energy properties of non-perturbative quantum systems: A space reduction approach |
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| Authors: | Tarek Khalil Jean Richert |
| Affiliation: | a Laboratoire de Physique Théorique, UMR 7085 CNRS/ULP, Université Louis Pasteur, 67084 Strasbourg Cedex, France b Département de Physique, Faculté des Sciences, Section V, Université Libanaise, Nabatieh, Liban |
| Abstract: | We propose and test a renormalization procedure which acts in Hilbert space. We test its efficiency on strongly correlated quantum spin systems by working out and analyzing the low-energy spectral properties of frustrated quantum spin systems in different parts of the phase diagram and in the neighbourhood of quantum critical points. |
| Keywords: | 03.65.-w 02.70.-c 68.65.-k 71.15.Nc |
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