Reconciling field-theoretical and semiclassical approaches to quantum 2D antiferromagnets

by: Beard, Alessandro Cuccoli, Ruggero Vaia, Paola Verrucchi

Journal of Magnetism and Magnetic Materials, Vol. 272-276, No. Part 2. (May 2004), pp. 892-893.

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摘要

We show that, starting from the field-theoretical expression for the correlation length [xi] of the 2D quantum Heisenberg antiferromagnet corrected for cut-off effects and our knowledge of the classical thermodynamics of the model, the observed temperature dependence of [xi] can be reproduced. We find also that the cut-off effects contains the same pure-quantum renormalizations of the pure-quantum self-consistent harmonic approximation semiclassical framework: the gap between quantum field theoretical and semiclassical results is thus bridged.

@article{citeulike:2503859, abstract = {We show that, starting from the field-theoretical expression for the correlation length [xi] of the 2D quantum Heisenberg antiferromagnet corrected for cut-off effects and our knowledge of the classical thermodynamics of the model, the observed temperature dependence of [xi] can be reproduced. We find also that the cut-off effects contains the same pure-quantum renormalizations of the pure-quantum self-consistent harmonic approximation semiclassical framework: the gap between quantum field theoretical and semiclassical results is thus bridged.}, author = {Beard and Cuccoli, Alessandro and Vaia, Ruggero and Verrucchi, Paola }, booktitle = {Proceedings of the International Conference on Magnetism (ICM 2003)}, citeulike-article-id = {2503859}, doi = {http://dx.doi.org/10.1016/j.jmmm.2003.12.1149}, journal = {Journal of Magnetism and Magnetic Materials}, keywords = {2004, quantum\_magnetism, quantum\_world, verrucchi}, month = {May}, number = {Part 2}, pages = {892--893}, posted-at = {2008-03-10 18:05:10}, priority = {2}, title = {Reconciling field-theoretical and semiclassical approaches to quantum 2D antiferromagnets}, url = {http://dx.doi.org/10.1016/j.jmmm.2003.12.1149}, volume = {272-276}, year = {2004} }

RIS record

TY - JOUR ID - citeulike:2503859 L3 - citeulike-article-id:2503859 N2 - We show that, starting from the field-theoretical expression for the correlation length [xi] of the 2D quantum Heisenberg antiferromagnet corrected for cut-off effects and our knowledge of the classical thermodynamics of the model, the observed temperature dependence of [xi] can be reproduced. We find also that the cut-off effects contains the same pure-quantum renormalizations of the pure-quantum self-consistent harmonic approximation semiclassical framework: the gap between quantum field theoretical and semiclassical results is thus bridged. IS - Part 2 JF - Journal of Magnetism and Magnetic Materials EP - 893 TI - Reconciling field-theoretical and semiclassical approaches to quantum 2D antiferromagnets VL - 272-276 T2 - Proceedings of the International Conference on Magnetism (ICM 2003) SP - 892 KW - 2004 KW - quantum_magnetism KW - quantum_world KW - verrucchi AU - Beard AU - Cuccoli, Alessandro AU - Vaia, Ruggero AU - Verrucchi, Paola PY - 2004/05// UR - http://dx.doi.org/10.1016/j.jmmm.2003.12.1149 ER -

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