Coupling to anisotropic elastic media: Magnetic and liquid-crystal phase transitions

Marco A. De Moura, T. C. Lubensky, Yoseph Imry, Amnon Aharony

Research output: Contribution to journalArticlepeer-review

73 Scopus citations


A generalization of the Larkin-Pikin-Sak model in which an n-component order parameter is coupled to a general anisotropic elastic continuum is studied using the ε expansion. It is found that the fixed-point structure is the same as the isotropic model but that all fixed points are unstable with respect to anisotropic perturbations, independent of external boundary conditions. The compressible smectic-A to smectic-C liquid-crystal transition is also studied. It is found to be unaffected by elastic degrees of freedom and is, therefore, expected to have helium exponents, as previously predicted by de Gennes.

Original languageEnglish
Pages (from-to)2176-2185
Number of pages10
JournalPhysical Review B-Condensed Matter
Issue number5
StatePublished - 1976


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