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Temperature fluctuations in the canonical ensemble (1992)

Adriaans, M. J. ; Nissen, J. A. ; Chui, T. C. P. ; [et al.]

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Publication Date: 2019-07-12

Description: We report the first quantitative measurements of spontaneous temperature fluctuations in a physical system well modeled by a canonical ensemble. Using superconducting magnetometers and a carefully controlled thermal environment, we have measured the noise spectra of paramagnetic salt thermometers that were coupled to thermal reservoirs at 2 K. The noise spectra were found to be in very good agreement with the predictions of the fluctuation-dissipation theorem. Our observations are at variance with some interpretations of fluctuations in the canonical ensemble.

Keywords: THERMODYNAMICS AND STATISTICAL PHYSICS

Type: Physical Review Letters (ISSN 0031-9007); 69; 21; p. 3005-3008.

Format: text

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