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Stokes-Einstein Relation in Different Models of Water
Sergey Khrapak1, Alexey Khrapak1
1Joint Institute for High Temperatures, Russian Academy of Sciences, 125412 Moscow, Russia.
Abstract:
The purpose of this paper is to discuss to which extent a microscopic version of the Stokes-Einstein (SE) relation without the hydrodynamic radius applies to liquid water. We demonstrate that the self-diffusion and shear viscosity data for five popular water models, recently reported by Ando [J. Chem. Phys. 159, 101102 (2023)], are in excellent agreement with the SE relation. The agreement with experimental results is also quite impressive. The limitations on the applicability of the SE relation are briefly discussed.
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