Fluctuations anisotropy arising from velocity or temperature gradients

D. Beysens

Physica A: Statistical Mechanics and its Applications, 1983, vol. 118, issue 1, 250-267

Abstract: Fluids out of equilibrium may exhibit unusual behavior. Thus a thermal gradient can induce long-range correlations in the sound modes, whereas a shear flow is able to suppress the large correlations occurring near a critical point. Light scattering techniques allow these different behaviors to be detected. In the first case, an asymmetry in the Brillouin lines becomes visible; in the second case a strong anisotropy in the order parameter fluctuations appears, so that mean-field theory applies. This theory should be valid at equilibrium only in a space of dimensionality higher than 4.

Date: 1983
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:118:y:1983:i:1:p:250-267

DOI: 10.1016/0378-4371(83)90191-7

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