Comment on "Equilibrium Polymerization and Gas-liquid Critical Behavior in the Stockmayer Fluid"

In a recent paper Hentschke presented new results on the vapor-liquid transition in the Stockmayer fluid. In this Comment, we analyze the data further and demonstrate that at high dipole strength, the isotropic attractive part of the Stockmayer potential is negligible compared to the thermal energy at the vapor-liquid critical point. The results therefore suggest that the transition is largely driven by the dipolar interactions. © 2008 The American Physical Society.The work was supported by INTAS Grant No. 03-51-6064, DFG-RBRF Joint Grants No. HO 1108/12-1 and No. 06-02-04019. S.S.K. acknowledges support from the CRDF and President of Russian Federation Grant No. MK4836.2006.2