Crossover behavior of the susceptibility and the specific heat near a second-order phase transition

M.Y. Belyakov and S.B. Kiselev

Physica A: Statistical Mechanics and its Applications, 1992, vol. 190, issue 1, 75-94

Abstract: Simple crossover equations for the susceptibility and the specific heat in zero field have been obtained on the basis of the renormalization-group method and ε-expansion. The equations contain the Ginzburg number as a parameter. At temperatures near the critical temperature, scaling behavior including the first Wegner corrections is reproduced. At temperatures far away from the critical temperature the classical Landau expansion with square-root corrections is recovered. For small values of the Ginzburg number the crossover equations approach a universal form. The equations are applied to represent experimental specific heat data for CH4, C2H6, Ar, O2 and CO2 along the critical isochore in a universal form.

Date: 1992
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:190:y:1992:i:1:p:75-94

DOI: 10.1016/0378-4371(92)90078-5

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