Chiral entanglement in triangular lattice models

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dc.creatorTsomokos, D. I.
dc.creatorGarcia-Ripoll, J. J.
dc.creatorCooper, N. R.
dc.creatorPachos, J. K.
dc.date2007-06-25
dc.date2007-11-09
dc.date.accessioned2026-07-07T08:55:09Z
dc.date.available2026-07-07T08:55:09Z
dc.descriptionWe consider the low energy spectrum of spin-1/2 two-dimensional triangular lattice models subject to a ferromagnetic Heisenberg interaction and a three spin chiral interaction of variable strength. Initially, we consider quasi-one dimensional ladder systems of various geometries. Analytical results are derived that yield the behavior of the ground states, their energies and the transition points. The entanglement properties of the ground state of these models are examined and we find that the entanglement depends on the lattice geometry due to frustration effects. To this end, the chirality of a given quantum state is used as a witness of tripartite entanglement. Finally, the two dimensional model is investigated numerically by means of exact diagonalization and indications are presented that the low energy sector is a chiral spin liquid.
dc.description9 pages, 7 figures, revised with more numerical results and further discussions
dc.identifierhttps://arxiv.org/abs/0706.3612
dc.identifierhttp://arxiv.org/abs/0706.3612
dc.identifierPhys. Rev. A 77, 012106 (2008)
dc.identifierdoi:10.1103/PhysRevA.77.012106
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/146186
dc.subjectQuantum Physics
dc.subjectStrongly Correlated Electrons
dc.titleChiral entanglement in triangular lattice models
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