Study of critical behavior of the supersymmetric spin chain that models plateau transitions in the integer quantum Hall effect

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dc.creatorTsai, Shan-Wen
dc.creatorMarston, J. B.
dc.date1999-08-12
dc.date.accessioned2026-07-07T03:14:12Z
dc.date.available2026-07-07T03:14:12Z
dc.descriptionWe use the density-matrix renormalization-group (DMRG) algorithm and finite-size scaling to study a supersymmetric (SUSY) spin chain that models plateau transitions in the integer quantum Hall effect. To illustrate the method, we first present results for the S=1 antiferromagnetic spin chain. Different scaling behavior of the dimerization operator is obtained for the Haldane phase, the dimerized phase, and at the critical point separating the two phases. We then investigate the supersymmetric spin chain. As the on-site Hilbert space has infinite dimension, it is non-compact. We present DMRG calculations for supersymmetric truncations of the on-site Hilbert space and also for non-supersymmetric truncations. These two cases scale differently, in accord with a Lieb-Schultz-Mattis type theorem.
dc.description4 pages, 4 .eps figures, presented at Localization-99, requires annalen.cls (included)
dc.identifierhttps://arxiv.org/abs/cond-mat/9908180
dc.identifierhttp://arxiv.org/abs/cond-mat/9908180
dc.identifierAnn. Phys. (Leipzig) 8, Special Issue, 261 - 264 (1999)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/29588
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleStudy of critical behavior of the supersymmetric spin chain that models plateau transitions in the integer quantum Hall effect
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