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Updated: May 10, 2026

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
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Published on: April 12, 2019

Electronically coarse-grained model for water.

A Jones1, F Cipcigan, V P Sokhan

  • 1School of Physics and Astronomy, University of Edinburgh, Mayfield Road, Edinburgh EH9 3JZ, United Kingdom.

Physical Review Letters
|June 18, 2013
PubMed
Summary
This summary is machine-generated.

We developed a new coarse-grained model for water that accurately captures electronic interactions. This model enables realistic simulations of liquid water and its properties across different conditions.

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Area of Science:

  • Computational chemistry
  • Condensed matter physics
  • Physical chemistry

Background:

  • Accurate modeling of liquid water is crucial for understanding chemical and physical processes.
  • Existing models often struggle to capture complex electronic interactions, such as many-body dispersion and polarization.

Purpose of the Study:

  • To introduce a novel, electronically coarse-grained model for water.
  • To represent long-range, many-body electronic responses using an embedded quantum oscillator.
  • To validate the model's ability to reproduce known water properties and simulate realistic liquid behavior.

Main Methods:

  • Development of an electronically coarse-grained description of water.
  • Utilizing an embedded quantum oscillator to represent electronic responses.
  • Employing molecular dynamics with electronic path integral sampling for simulations.

Main Results:

  • The model exactly reproduces leading-order response coefficients and gas-phase electrostatic moments.
  • Molecular dynamics simulations demonstrate the emergence of realistic liquid water.
  • The model shows transferability to nonambient state points and the water surface.

Conclusions:

  • The proposed coarse-grained model is sufficient for simulating realistic liquid water.
  • Independent adjustment of many-body dispersion and polarization strengths significantly impacts condensed-phase properties.
  • The model offers a computationally efficient yet accurate approach for studying water.