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Light scattering by longitudinal acoustic modes in supercooled molecular liquids II: microscopic derivation of the phenomenological equations |
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| Authors: | T Franosch A Latz RM Pick |
| Institution: | 1.Hahn-Meitner Institut, Glienicker Strasse 100, 14109 Berlin, Germany,DE;2.Technische Universit?t Chemnitz, 09107 Chemnitz, Germany,DE;3.UFR 925, UPMC, Paris, France,FR |
| Abstract: | The constitutive equations for the orientational dynamics of a liquid formed of linear molecules are derived microscopically. The resulting generalised Langevin equations coincide with the phenomenological approach of Dreyfus et al. 1]. Formally exact expressions are given for the phenomenological coefficients and various constraints are shown to be consequences of this microscopic approach. Received 14 August 2002 Published online 4 February 2003 RID="a" ID="a"e-mail: franosch@hmi.de |
| Keywords: | PACS 64 70 Pf Glass transitions – 78 35 +c Brillouin and Rayleigh scattering other light scattering – 61 25 Em Molecular liquids |
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