Please use this identifier to cite or link to this item: https://doi.org/10.1209/0295-5075/95/50001
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dc.titleQuantum phase transition between cluster and antiferromagnetic states
dc.contributor.authorSon, W.
dc.contributor.authorAmico, L.
dc.contributor.authorFazio, R.
dc.contributor.authorHamma, A.
dc.contributor.authorPascazio, S.
dc.contributor.authorVedral, V.
dc.date.accessioned2014-05-19T02:54:32Z
dc.date.available2014-05-19T02:54:32Z
dc.date.issued2011-09
dc.identifier.citationSon, W., Amico, L., Fazio, R., Hamma, A., Pascazio, S., Vedral, V. (2011-09). Quantum phase transition between cluster and antiferromagnetic states. EPL 95 (5) : -. ScholarBank@NUS Repository. https://doi.org/10.1209/0295-5075/95/50001
dc.identifier.issn02955075
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/53123
dc.description.abstractWe study a Hamiltonian system describing a three-spin-1/2 cluster-like interaction competing with an Ising-like exchange. We show that the ground state in the cluster phase possesses symmetry protected topological order. A continuous quantum phase transition occurs as result of the competition between the cluster and Ising terms. At the critical point the Hamiltonian is self-dual. The geometric entanglement is also studied and used to investigate the quantum phase transition. Our findings in one dimension corroborate the analysis of the two-dimensional generalization of the system, indicating, at a mean-field level, the presence of a direct transition between an antiferromagnetic and a valence bond solid ground state. © 2011 EPLA.
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.contributor.departmentCENTRE FOR QUANTUM TECHNOLOGIES
dc.description.doi10.1209/0295-5075/95/50001
dc.description.sourcetitleEPL
dc.description.volume95
dc.description.issue5
dc.description.page-
dc.identifier.isiut000294325500001
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