We have performed the mol. dynamics simulation to obtain energy and pressure of argon, krypton, and xenon at different temps. using a HFD-like potential which has been obtained with an inversion of viscosity data at zero pressure. The contribution of three-body dispersion resulting from third-order triple-dipole interactions has been computed using an accurate simple relation between two-body and three-body interactions developed by Marcelli and Sadus. Our results indicate that this simple three-body potential which was originally used in conjunction with the BFW potential is also valid when used with the HFD-like potential. This appears to support the conjecture that the relationship is independent of the two-body potential. The energy and pressure obtained are in good overall agreement with the expt., esp. for argon. A comparison of our simulated results with HMSA and ODS integral equations and a mol. simulation have been also included.

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