The Heisenberg antiferromagnet: an explicitly rotational invariant formulation

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A simple derivation of an explicitly rotational invariant Lagrangian describing the dynamics of an antiferromagnetic spin system is presented. The scope of the derived Lagrangian is analysed in the context of schematic models. It is shown that the Lagrangian describes the behaviour of spin systems from the anti-ferromagnetic to the ferromagnetic regimes.
plain LaTeX, 13 pages

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/21846

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0307461
 http://arxiv.org/abs/cond-mat/0307461

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arXiv