Liquid-Liquid Criticality in TIP4P/2005 and Three-State Models of Water.

ABSTRACT: Molecular dynamics simulations leading to the isothermal compressibility, the isobaric thermal expansivity, and the isobaric heat capacity of TIP4P/2005 water are found to be consistent with the coordinates of its second, liquid-liquid critical point reported recently by Debenedetti et al. [ Science 2020, 369, 289-292]. In accord with the theory of critical phenomena, we encounter that the rise in the magnitude of these response functions as temperature is lowered is especially marked along the critical isochore. Furthermore, response-function ratios provide a test for thermodynamic consistency at the critical point and manifest nonuniversal features sharply distinguishing liquid-liquid from standard gas-liquid criticality. The whole pattern of behavior revealed by simulations is qu

SUBMITTER: Cerdeirina CA 

PROVIDER: S-EPMC10165646 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature