Abstract
Simulations are performed for a fluid whose atoms interact with the Lennard-Jones pair potential and the Axilrod-Teller three-body potential, and results are tabulated for the internal energy and for the virial pressure. The triple dipole potential is effectively repulsive, as is well known, making the internal energy less negative and the pressure more positive than for the underlying Lennard-Jones fluid. For the relatively low polarizabilities examined, \ensuremath{\nu}/3\ensuremath{\epsilon}${\mathrm{\ensuremath{\sigma}}}^{9}$\ensuremath{\approxeq}0.03, the perturbation approximation of Barker, Fisher, and Watts [Mol. Phys. 21, 657 (1971)] is shown to be essentially exact, and the hypernetted-chain approximation of Attard [Phys. Rev. A 45, 3659 (1992)] is quantitatively accurate at low densities, but only qualitatively correct for the liquid state.
Published Version
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