Low temperature Casimir-Lifshitz free energy and entropy: the case of poor conductors
arXiv:0809.0763 · doi:10.1088/1742-6596/161/1/012010
Abstract
The controversy concerning the temperature correction to the Casimir force has been ongoing for almost a decade with no view to a solution and has recently been extended to include semiconducting materials. We review some theoretical aspects of formal violations of Nernst's heat theorem in the context of Casimir Lifshitz thermodynamics and the role of the exponent of the leading term of the dielectric permittivity with respect to imaginary frequency. A general formalism for calculating the temperature corrections to free energy at low temperatures is developed for systems which do not exhibit such anomalies, and the low temperature behaviour of the free energy in a gap between half-spaces of poorly conducting materials modelled with a Drude type permittivity is calculated.
Contributions to Proceedings of "60 Years of Casimir Effect" Brasilia, June 2008
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- Casimir-Foucault interaction: Free energy and entropy at low temperature
- Geometric origin of negative Casimir entropies: A scattering-channel analysis
- Disentangling geometric and dissipative origins of negative Casimir entropies
- On the Temperature Dependence of the Casimir Force for Bulk Lossy Media