Estimating phase transition of perturbed Heisenberg quantum chain in mixtures of ground and first ex...
Estimating phase transition of perturbed Heisenberg quantum chain in mixtures of ground and first excited states
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IOP Publishing
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English
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IOP Publishing
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We show that the nearest neighbour entanglement in a mixture of ground and first excited states—a subjacent state—of the $J_1-J_2$ Heisenberg quantum spin chain can be used as an order parameter to detect the phase transition of the chain from a gapless spin fluid to a gapped dimer phase. We study the effectiveness of the order parameter for varyin...
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Estimating phase transition of perturbed Heisenberg quantum chain in mixtures of ground and first excited states
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TN_cdi_doaj_primary_oai_doaj_org_article_8bbac5ae220448fbae3e0c5cdcb66a4c
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https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_doaj_primary_oai_doaj_org_article_8bbac5ae220448fbae3e0c5cdcb66a4c
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E-ISSN
1367-2630
DOI
10.1088/1367-2630/ad0eef
