Abstract
This paper reviews the derivation of equations for slow dynamical processes in a variety of systems, including rotating rigid rotors, crystalline solids, isotropic and nematic elastomers, gels in an isotropic fluid background, and nematic liquid crystals. It presents a recent derivation of the Leslie-Ericksen equations for the dynamics of nematic liquid crystals that clarifies the nature of the nonhydrodynamic modes in these equations. As a final example of the phenomenological approach to slow dynamical processes, it discusses the dynamics of a driven nonequilibrium system: a two-dimensional gas of chiral ‘rattlebacks’ on a vibrating substrate.
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Lubensky, T.C. Phenomenological dynamics: From Navier–Stokes to chiral granular gases. Pramana - J Phys 64, 727–742 (2005). https://doi.org/10.1007/BF02704579
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DOI: https://doi.org/10.1007/BF02704579