Dynamic Correlations in the Ordered Phase of Perovskites
The existence of a non-vanishing average value P of the order parameter below the critical temperature T should give rise to qualitatively new features in statics and dynamics of a variety of systems. A crucial role in this context is played by the symmetry of the space spanned by the degrees of freedom of the order parameter of n components in d dimensions.
KeywordsDynamic Correlation Small Anisotropy Mean Field Momentum Field Parameter Susceptibility
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- 3.An account of this work was reported by G. Meissner, N. Menyhárd, and P. Szépfalusy at the 8th MECO-Seminar on Phase Transitions and Critical Phenomena, March 23–25, 1981, Saarbrücken, FRG (unpublished).Google Scholar
- 4.See, e.g., the lecture of K.A. Müller at this conference.Google Scholar