"It is Landau’s invention—as it may, I feel, be fairly called—of the order parameter that is so important but often underappreciated... Landau’s concept of the order parameter, indeed, brought light, clarity, and form to the general theory of phase transitions, leading eventually, to the characterization of multicritical points and the understanding of many characteristic features of ordered states. But in 1944 a bombshell struck! Lars Onsager, by a mathematical tour de force, deeply admired by Landau himself, computed exactly the partition function and thermodynamic properties of the simplest model of a ferromagnet or a fluid... the nature of the critical singularities disagreed profoundly—as I will explain below—with essentially all the detailed predictions of the Landau theory (and of all foregoing, more specific theories)."
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Academics from RussiaNobel laureates in PhysicsCosmologistsPhysicists from the Soviet UnionNobel laureates from the Soviet Union
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Lev Landau
Lev Davidovich Landau (January 22 1908 – April 1 1968) was a Soviet physicist, who made fundamental contributions to many areas of theoretical physics. He received the 1962 Nobel Prize in Physics for his development of a mathematical theory of superfluidity that accounts for the properties of liquid helium II at a temperature below 2.17 K (−270.98 °C).
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