A non-classical van der Waals loop: Collective variables method
R. V. Romanik, M. P. Kozlovskii
TL;DR
This paper investigates the equation of state for an Ising-like model using the collective variables method, revealing a non-classical van der Waals loop and comparing results with a trigonometric parametric model.
Contribution
It introduces a novel application of the collective variables method to derive a non-classical van der Waals loop in the equation of state.
Findings
Identification of a non-classical van der Waals loop
Comparison with trigonometric parametric model results
Insights into magnetization and field behavior
Abstract
The equation of state is investigated for an Ising-like model in the framework of collective variables method. The peculiar feature of the theory is that a non-classical van der Waals loop is extracted. The results are compared with the ones of a trigonometric parametric model in terms of normalized magnetization, \tilde{M}, and field, \tilde{H}.
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