The linear and nonlinear dielectric response of water to spatially varying electric fields of different wavelength and field strengths is calculated by means of molecular dynamics computer simulation for a central force model of water. We find that nonlinear effects are strongest at k≈3^-1, where the linear response function χ(k)0ex0ex=0ex0ex1-1/ε(k) has its main maximum. For small k the response is linear up to field strengths of E₀≈1V/. A phenomenological theory is discussed which reproduces the main nonlinear effects found in the simulation.
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Kornyshev et al. (1997) studied this question.
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