Entanglement in the Majumdar-Ghosh model

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dc.creatorChhajlany, Ravindra W.
dc.creatorTomczak, Piotr
dc.creatorWojcik, Antoni
dc.creatorRichter, Johannes
dc.date2006-10-13
dc.date.accessioned2026-07-07T08:05:37Z
dc.date.available2026-07-07T08:05:37Z
dc.descriptionWe present an analysis of the entanglement characteristics in the Majumdar-Ghosh (MG) or $J_{1}$-$J_{2}$ Heisenberg model. For a system consisting of up to 28 spins, there is a deviation from the scaling behaviour of the entanglement entropy characterizing the unfrustrated Heisenberg chain as soon as $J_{2} >0.25$. This feature can be used as an indicator of the dimer phase transition that occurs at $J_{2} = J_{2}^{*} \approx 0.2411 J_{1}$. Additionally, we also consider entanglement at the MG point $J_{2}=0.5 J_{1}$.
dc.description7 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0610379
dc.identifierhttp://arxiv.org/abs/cond-mat/0610379
dc.identifierPhys. Rev. A 75, 032340 (2007)
dc.identifierdoi:10.1103/PhysRevA.75.032340
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/130336
dc.subjectStrongly Correlated Electrons
dc.subjectQuantum Physics
dc.titleEntanglement in the Majumdar-Ghosh model
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