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Fluctuations of the Intensity in Thermal Radiation and the Thermodynamic Fluctuations of Emitters

Alfonso Rueda

Open publisher page 5 citations

Abstract

The thermodynamic fluctuations of hot bodies emitting thermal radiation generate corresponding fluctuations in the emitted intensity. A simple derivation using standard fluctuation-dissipation arguments shows that such fluctuations manifest themselves in the time correlations of the emitted radiation intensity. An experiment is proposed to detect the intensity correlations. A modified form of the main result satisfying the stationarity condition of the intensity correlations is also obtained.

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What this paper is about

The thermodynamic fluctuations of hot bodies emitting thermal radiation generate corresponding fluctuations in the emitted intensity. A simple derivation using standard fluctuation-dissipation arguments shows that such fluctuations manifest themselves in the time correlations of the emitted radiation intensity. An experiment is proposed to detect the intensity correlations. A modified form of the main result satisfying the stationarity condition of the intensity correlations is also obtained.

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Available abstract

The thermodynamic fluctuations of hot bodies emitting thermal radiation generate corresponding fluctuations in the emitted intensity. A simple derivation using standard fluctuation-dissipation arguments shows that such fluctuations manifest themselves in the time correlations of the emitted radiation intensity. An experiment is proposed to detect the intensity correlations. A modified form of the main result satisfying the stationarity condition of the intensity correlations is also obtained.

Key concepts: Intensity (physics), Radiant intensity, Radiation, Physics, Thermal, Thermal radiation, Dissipation, Thermal fluctuations

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