Elsevier

Physics Letters A

Volume 107, Issue 7, 18 February 1985, Pages 299-304
Physics Letters A

A new theoretical constraint on the static critical behaviour of the specific heat

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Abstract

We show from a field-theoretical approach that, if we admit that the additive renormalization function of the specific heat C is singular at the fixed point, we obtain a coherent formulation of the critical behaviour of C. Especially we show that the α<0 case, which corresponds to a cusp for C, is dominated by a critical constant Bcr generated by the long-range correlations of the fluctuations. We derive a universal combination between the leading and first correction amplitudes and Bcr, which will have a great importance in the analysis of experimental data.

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