A long-standing question in water research is the possibility that supercooled liquid water can undergo a liquid-liquid phase transition (LLT) into high- and low-density liquids. We used several complementary molecular simulation techniques to evaluate the possibility of an LLT in an ab initio neural network model of water trained on density functional theory calculations with the SCAN exchange correlation functional. We conclusively show the existence of a first-order LLT and an associated critical point in the SCAN description of water, representing the first definitive computational evidence for an LLT in water from first principles.

Original languageEnglish (US)
Article number255702
JournalPhysical review letters
Issue number25
StatePublished - Dec 16 2022

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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