A Finite-Size Scaling Study of a Model of Globular Proteins

Details A Finite-Size Scaling Study of a Model of Globular Proteins A Finite-Size Scaling Study of a Model of Globular Proteins

2003-11-24

arxiv.org/abs/cond-mat/0311551v2

Physics

Condensed Matter

Soft Condensed Matter

17 pages, 10 figures, 2 Tables

Scientific paper

10.1063/1.1689295

Grand canonical Monte Carlo simulations are used to explore the metastable fluid-fluid coexistence curve of the modified Lennard-Jones model of globular proteins of ten Wolde and Frenkel (Science, v277, 1975 (1997)). Using both mixed-field finite-size scaling and histogram reweighting methods, the joint distribution of density and energy fluctuations is analyzed at coexistence to accurately determine the critical-point parameters. The subcritical coexistence region is explored using the recently developed hyper-parallel tempering Monte Carlo simulation method along with histogram reweighting to obtain the density distributions. The phase diagram for the metastable fluid-fluid coexistence curve is calculated in close proximity to the critical point, a region previously unattained by simulation.

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