Disorder in Low Dimensions

  • Assa Auerbach
Part of the Graduate Texts in Contemporary Physics book series (GTCP)

Abstract

Spontaneously broken symmetry is a general phenomenon in statistieal meehanies and partiele physies. It ean oeeur at finite temperatures and when the order parameter does not eommute with the Hamiltonian. To foeus our diseussion, we eonsider a spin density wave in the z direetion defined by the operator
$$ S_q^z = \sum\limits_i {e^{iq \cdot x_i } S_i^z ,} $$
(6.1)
where i labels the lattiee sites and q is the ordering wave veetor.

Keywords

Summing Haldane 

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References

  1. N.N. Bogoliubov, Physik. Abhandl. Sowjetunion 6, 1, 113, 229 (1962).Google Scholar
  2. P.C. Hohenberg, Phys. Rev. 158, 383 (1967).ADSCrossRefGoogle Scholar
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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • Assa Auerbach
    • 1
  1. 1.Technion Department of PhysicsIsrael Institute of TechnologyHaifaIsrael

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