Symmetry Breaking and Long Range Order in Heisenberg Antiferromagnets

  • Tohru Koma
Part of the NATO ASI Series book series (NSSB, volume 324)

Abstract

Néel order in quantum Heisenberg antiferromagnetic spin systems has been a sub ject of considerable interest. This is not only because the problem has close connections with experiments, but also it offers a prototype of nontrivial many body problems in quantum systems where the order operator and the Hamiltonian do not commute with each other. In such a system, one encounters strong “quantum fluctuation”, which may lead to exotic behavior not observed in “classical” systems.

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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • Tohru Koma
    • 1
  1. 1.Department of PhysicsGakushuin UniversityToshima-ku, TokyoJapan

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