Theoretical and Mathematical Physics

, Volume 195, Issue 2, pp 704–717 | Cite as

Quasiaverages and Degenerate Quantum Equilibriums of Magnetic Systems with SU(3) Symmetry of the Exchange Interaction

  • N. N. BogolyubovJr.
  • A. V. Glushchenko
  • M. Yu. Kovalevskii


We consider magnetic systems with the SU(3) symmetry of the exchange interaction. For degenerate equilibriums with broken magnetic and phase symmetries, we formulate classification equations for the order parameter using the concept of residual symmetry. Based on them, we obtain an explicit form of the equilibrium values of the order parameters of a spin nematic and an antiferromagnet in the general form. We clarify the existence conditions for six types of superfluid equilibriums for the order parameter describing the Bose pair condensate. We study inhomogeneous equilibriums and obtain the explicit coordinate dependence of the magnetic order parameters.


equilibrium order parameter spin unitary symmetry classification equation 


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© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • N. N. BogolyubovJr.
    • 1
  • A. V. Glushchenko
    • 2
  • M. Yu. Kovalevskii
    • 2
  1. 1.Steklov Mathematical Institute of Russian Academy of SciencesMoscowRussia
  2. 2.National Science Center “Kharkov Institute for Physics and Technology,”KharkovUkraine

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