Andreas Mielke
Institut für Theoretische Physik
Ruprecht-Karls Universität
Philosophenweg 19
D-69120 Heidelberg
Germany
Tel.: ++49 6221 549431 (Sekretariat)
Fax: ++49 6221 549331
e-mail:
mielke@tphys.uni-heidelberg.de
Moritz Drescher, Andreas Mielke: Hard-core bosons in flat band systems above the critical density
Eur. Phys. J. B90,
217
(2017)
.
Archiv: arXiv:1704.03905
Abstract
We investigate the behaviour of hard-core bosons in one- and two-dimensional flat band systems, the chequerboard and the kagom\'e lattice and one-dimensional analogues thereof. The one dimensional systems have an exact local reflection symmetry which allows for exact results. We show that above the critical density an additional particle forms a pair with one of the other bosons and that the pair is localised. In the two-dimensional systems exact results are not available but variational results indicate a similar physical behaviour.BibTeX-Eintrag
@article{Drescher2017,
author="Moritz Drescher, Andreas Mielke",
title="Hard-core bosons in flat band systems above the critical density",
journal="Eur. Phys. J. B",
volume="90",
pages="217",
year="2017"
}
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Letzte Änderung: 2.9.2024.
mielke@tphys.uni-heidelberg.de
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