Hiroshi Watanabe, Nobuyasu Ito, Chin-Kun Hu
The gas-liquid phase transition of the three-dimensional Lennard-Jones
particles system is studied by molecular dynamics simulations. The gas and
liquid densities in the coexisting state are determined with high accuracy. The
critical point is determined by the block density analysis of the Binder
parameter with the aid of the law of rectilinear diameter. From the critical
behavior of the order parameter and the surface tension, the critical exponents
of the order parameter and correlation length are estimated to be $\beta =
0.3285(7)$ and $\nu = 0.640(4)$, respectively. While the value of $\beta$ is
consistent with the Ising universality, that of $\nu$ is slightly different
from that. A strong finite-size effect of the interface thickness between gas
and liquid phases is also observed.
View original:
http://arxiv.org/abs/1202.5369
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