Randomness-driven quantum phase transition in bond-alternating Haldane chain

Simple item page
dc.creatorArakawa, Takayuki
dc.creatorTodo, Synge
dc.creatorTakayama, Hajime
dc.date2004-10-29
dc.date2005-02-07
dc.date.accessioned2026-07-07T03:01:47Z
dc.date.available2026-07-07T03:01:47Z
dc.descriptionThe effect of bond randomness on the spin-gapped ground state of the spin-1 bond-alternating antiferromagnetic Heisenberg chain is discussed. By using the loop cluster quantum Monte Carlo method, we investigate the stability of topological order in terms of the recently proposed twist order parameter [M. Nakamura and S. Todo: Phys. Rev. Lett. 89 (2002) 077204]. It is observed that the dimer phases as well as the Haldane phase of the spin-1 Heisenberg chain are robust against a weak randomness, though the valence-bond-solid-like topological order in the latter phase is destroyed by introducing a disorder stronger than the critical value.
dc.description4 pages, 5 figures; minor changes; accepted for publication in J. Phys. Soc. Jpn
dc.identifierhttps://arxiv.org/abs/cond-mat/0410755
dc.identifierhttp://arxiv.org/abs/cond-mat/0410755
dc.identifierJ. Phys. Soc. Jpn. 74, 1127 (2005)
dc.identifierdoi:10.1143/JPSJ.74.1127
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25172
dc.subjectDisordered Systems and Neural Networks
dc.subjectStatistical Mechanics
dc.titleRandomness-driven quantum phase transition in bond-alternating Haldane chain
dc.typetext

Files

Collections

arXiv