J. Phys. I France
Volume 1, Numéro 3, March 1991
Page(s) 383 - 393
DOI: 10.1051/jp1:1991140
J. Phys. I France 1 (1991) 383-393

Remarks on the multicritical topologies in the ${n=\infty}$ limit

Jacques Prost1 and Jérôme Pommier2

1  Groupe de Physico-Chimie Théorique, ESPCI, URA 1382 du CNRS, 10 rue Vauquelin, F-75231 Paris Cedex 05, France
2  Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, D-1000 Berlin 33, Germany

(Received 4 July 1990, accepted in final form 5 November 1990)

We show that phase diagrams involving the condensation of two vectorial order parameters in the limit ${n=\infty}$ ( n = number of components of the vectors) coupled only to quartic order exhibit an unexpectedly large variety of topologically distinct cases.

Nous montrons que les diagrammes de phase mettant en jeu des condensations de paramètres vectoriels à la limite ${n=\infty}$ ( n = nombre de composantes des vecteurs) révèlent une richesse inattendue de possibilités topologiquement distinctes.

© Les Editions de Physique 1991

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