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Yang-Yang Anomalies and Coexistence Diameters: Simulation of Asymmetric Fluids | | Young C. Kim
; | | Date: |
18 Mar 2005 | | Subject: | Statistical Mechanics | cond-mat.stat-mech | | Abstract: | A general method for estimating the Yang-Yang ratio, ${cal R}_{mu}$, and the coexistence-curve diameter of a model fluid via Monte Carlo simulations is presented on the basis of data for a hard-core square-well (HCSW) fluid and the restricted primitive model (RPM) electrolyte. The isothermal minima of $Q_{L}equiv< m^{2}>^{2}_{L}/< m^{4}>_{L}$ are evaluated at $T_{c}$ in an $L imes L imes L$ box where $m =
ho - <
ho>_{L}$ is the density fluctuation. The ``complete’’ finite-size scaling theory for the $Q_{scriptsize min}^{pm}(T_{c};L)$ incorporates pressure mixing in the scaling fields, thereby allowing for a Yang-Yang anomaly. | | Source: | arXiv, cond-mat/0503480 | | Other source: | [GID 324728] pmid16089536 | | Services: | Forum | Review | PDF | Favorites | |
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