Second critical point in two realistic models of water

Pablo G. Debenedetti, Francesco Sciortino, Gül H. Zerze

Research output: Contribution to journalArticlepeer-review

186 Scopus citations


The hypothesis that water has a second critical point at deeply supercooled conditions was formulated to provide a thermodynamically consistent interpretation of numerous experimental observations. A large body of work has been devoted to verifying or falsifying this hypothesis, but no unambiguous experimental proof has yet been found. Here, we use histogram reweighting and large-system scattering calculations to investigate computationally two molecular models of water, TIP4P/2005 and TIP4P/Ice, widely regarded to be among the most accurate classical force fields for this substance. We show that both models have a metastable liquid-liquid critical point at deeply supercooled conditions and that this critical point is consistent with the three-dimensional Ising universality class.

Original languageEnglish (US)
Pages (from-to)289-292
Number of pages4
Issue number6501
StatePublished - Jul 17 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General


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