Molecular reorientation in hydrogen-bonding liquids: through algebraic $\sim t^{-3/2}$ relaxation toward exponential decay

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dc.creatorGelin, M. F.
dc.creatorKosov, D. S.
dc.date2006-04-05
dc.date.accessioned2026-07-07T07:05:17Z
dc.date.available2026-07-07T07:05:17Z
dc.descriptionWe present a model for the description of orientational relaxation in hydrogen-bonding liquids. The model contains two relaxation parameters which regulate the intensity and efficiency of dissipation, as well as the memory function which is responsible for the short-time relaxation effects. It is shown that the librational portion of the orientational relaxation is described by an algebraic $\sim t^{-3/2}$ contribution, on top of which more rapid and non-monotonous decays caused by the memory effects are superimposed. The long-time behavior of the orientational relaxation is exponential, although non-diffusional. It is governed by the rotational energy relaxation. We apply the model to interpret recent molecular dynamic simulations and polarization pump-probe experiments on $HOD$ in liquid $D_{2}O$ [C. J. Fecko et al, J. Chem. Phys. 122, 054506 (2005)].
dc.identifierhttps://arxiv.org/abs/cond-mat/0604114
dc.identifierhttp://arxiv.org/abs/cond-mat/0604114
dc.identifierJ. Chem. Phys. 124, 144514 (2006)
dc.identifierdoi:10.1063/1.2191058
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109615
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.titleMolecular reorientation in hydrogen-bonding liquids: through algebraic $\sim t^{-3/2}$ relaxation toward exponential decay
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