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dc.contributor.authorGibson, Sandra J.-
dc.contributor.authorMeyer, Ralf-
dc.contributor.authorChitov, Gennady Y.-
dc.identifier.citationSandra J. Gibson, R. Meyer, Gennady Y. Chitov, Numerical study of critical properties and hidden orders in dimerized spin ladders, Phys. Rev. B 104423 (2011).en_CA
dc.description© 2011 American Physical Societyen_CA
dc.description.abstractDimerized antiferromagnetic spin-1 ladders are known to exhibit a quantum critical phase transition in the 2 ground state, the existence or absence of which is dependent on the dimerization pattern of the ladder. The gapped phases cannot be distinguished by the conventional Landau long-range order parameter. However, they possess a nonlocal (hidden) string-order parameter, which is nonzero in one phase and vanishes in the other. We use an exact diagonalization technique to calculate ground-state energies, energy gaps, and string-order parameters of dimerized two- and three-leg Heisenberg ladders, as well as a critical scaling analysis to yield estimates of the critical exponents ν and β.en_CA
dc.description.sponsorshipLaurentian University, Natural Sciences and Engineering Research Council of Canada (NSERC)en_CA
dc.publisherAmerican Physical Societyen_CA
dc.subjectQuantum spin systemsen_CA
dc.subjectSpin chain modelsen_CA
dc.titleNumerical study of critical properties and hidden orders in dimerized spin laddersen_CA
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