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Thermal Superradiance and the Clausius-Mossotti Lorentz-Lorenz Equations

S. Sivasubramanian·A. Widom·Y. N. Srivastava
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Abstract

Electric polarization phenomena in insulating systems have long been described in mean field theory by the (static) Clausius-Mossotti or (dynamic) Lorentz-Lorenz polarizabilities. It is here shown, in the strong coupling regime, that a thermodynamic phase instability exists in these models. The resulting thermodynamic phase diagram coincides with that obtained from Dicke-Preparata model of thermal superradiance.

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S. Sivasubramanian, A. Widom, Y. N. Srivastava. 2002-09-01. Thermal Superradiance and the Clausius-Mossotti Lorentz-Lorenz Equations. https://arxiv.org/abs/cond-mat/0209017

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