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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2001 Volume 74, Issue 5, Pages 309–313 (Mi jetpl4206)

This article is cited in 8 papers

CONDENSED MATTER

On critical behavior of phase transitions in certain antiferromagnets with complicated ordering

A. I. Mudrova, K. B. Varnashevb

a Bar-Ilan University
b St. Petersburg Electrotechnical University, St. Petersburg, Russia

Abstract: Within the four-loop $\varepsilon$ expansion, we study the critical behavior of certain antiferromagnets with complicated ordering. We show that an anisotropic stable fixed point governs the phase transitions with new critical exponents. This is supported by the estimate of critical dimensionality $N_c^C=1.445(20)$ obtained from six loops via the exact relation $N_c^C=\frac{1}{2} N_c^R$ established for the real and complex hypercubic models.

PACS: 64.60.-i, 75.40.Cx

Received: 28.06.2001
Revised: 06.08.2001

Language: English


 English version:
Journal of Experimental and Theoretical Physics Letters, 2001, 74:5, 279–283

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