Effects of symmetry-breaking perturbations on the three-state potts model

D. Blankschtein*, A. Aharony

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


The effects of linear and quadratic symmetry-breaking perturbations on the continuous version of the three-state Potts model are analysed, using both Landau's theory of phase transitions and renormalisation-group techniques. Variation of the strength of the perturbations produces many different types of phase diagrams, featuring lambda lines, first-order lines, critical, tricritical and triple points and other complexities. Universal amplitude ratios characterising the multicritical points are calculated to first order in epsilon =4-d.

Original languageEnglish
Article number007
Pages (from-to)4635-4648
Number of pages14
JournalJournal of Physics C: Solid State Physics
Issue number25
StatePublished - 1980


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