Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2003-07-18
Physics
Condensed Matter
Strongly Correlated Electrons
plain LaTeX, 13 pages
Scientific paper
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.
Brajczewska M.
Providencia Constança
Providencia J. da Jr.
Providencia Joao da
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