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arXiv · 2204.11113

Dipoles in blackbody radiation: Momentum fluctuations, decoherence, and drag force

Kanu Sinha·Peter W. Milonni
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Abstract

A general expression is derived for the momentum diffusion constant of a small polarizable particle in blackbody radiation, and is shown to be closely related to the long-wavelength collisional decoherence rate for such a particle in a thermal environment. We show how this diffusion constant appears in the steady-state photon emission rate of two dipoles induced by blackbody radiation. We consider in addition the Einstein--Hopf drag force on a small polarizable particle moving in a blackbody field, and derive its fully relativistic form from the Lorentz transformation of forces.

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Kanu Sinha, Peter W. Milonni. 2022-04-23. Dipoles in blackbody radiation: Momentum fluctuations, decoherence, and drag force. https://arxiv.org/abs/2204.11113

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