Spectral properties of thermal fluctuations on simple liquid surfaces below shot noise levels

Details Spectral properties of thermal fluctuations on simple liquid surfaces below shot noise levels Spectral properties of thermal fluctuations on simple liquid surfaces below shot noise levels

2011-12-19

arxiv.org/abs/1112.4260v1

Physics

Condensed Matter

Soft Condensed Matter

9 pages, 5 figures

Scientific paper

We study the spectral properties of thermal fluctuations on simple liquid surfaces, sometimes called ripplons. Analytical properties of the spectral function are investigated and are shown to be composed of regions with simple analytic behavior with respect to the frequency or the wave number. The derived expressions are compared to spectral measurements performed orders of magnitude below shot noise levels, which is achieved using a novel noise reduction method. The agreement between the theory of thermal surface fluctuations and the experiment is found to be excellent.

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