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Thermodynamic QED Coherence in Condensed Matter: Microscopic Basis of Thermal Superradiance
S. Sivasubramanian, A. Widom, Y. N. Srivastava
Electromagnetic superradiant field coherence exists in a condensed matter system if the electromagnetic field oscillators undergo a mean displacement. Transitions into thermal stat…
Thermal Superradiance and the Clausius-Mossotti Lorentz-Lorenz Equations
S. Sivasubramanian, A. Widom, Y. N. Srivastava
Electric polarization phenomena in insulating systems have long been described in mean field theory by the (static) Clausius-Mossotti or (dynamic) Lorentz-Lorenz polarizabilities.…
Temperature of a Compressed Bubble with Application to Sonoluminescence
S. Sivasubramanian, A. Widom, Y. N. Srivastava
The rise in temperature from the adiabatic compression of a bubble is computed in thermodynamic mean field (van der Waals) theory. It is shown that the temperature rise is higher f…
Radiation Induced Landau-Lifshitz-Gilbert Damping in Ferromagnets
S. Sivasubramanian, A. Widom, Y. N. Srivastava
The Landau-Lifshitz-Gilbert damping coefficient employed in the analysis of spin wave ferromagnetic resonance is related to the electrical conductivity of the sample. The changing…