Nature of crossover from classical to Ising-like critical behavior

Details Nature of crossover from classical to Ising-like critical behavior Nature of crossover from classical to Ising-like critical behavior

1998-07-31

arxiv.org/abs/cond-mat/9807415v1

Phys. Rev. E 58, R4060 (1998); 59, 7254 (1999)

Physics

Condensed Matter

Statistical Mechanics

4 pages RevTeX 3.0/3.1, 4 Encapsulated PostScript figures. Uses epsf.sty. Also available as PDF file at http://www.cond-mat.

Scientific paper

10.1103/PhysRevE.58.R4060

We present an accurate numerical determination of the crossover from classical to Ising-like critical behavior upon approach of the critical point in three-dimensional systems. The possibility to vary the Ginzburg number in our simulations allows us to cover the entire crossover region. We employ these results to scrutinize several semi-phenomenological crossover scaling functions that are widely used for the analysis of experimental results. In addition we present strong evidence that the exponent relations do not hold between effective exponents.

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