Negative Entropies in Casimir and Casimir-Polder Interactions

Abstract

It has been increasingly becoming clear that Casimir and Casimir-Polder entropies may be negative in certain regions of temperature and separation. In fact, the occurrence of negative entropy seems to be a nearly ubiquitous phenomenon. This is most highlighted in the quantum vacuum interaction of a nanoparticle with a conducting plate or between two nanoparticles. It has been argued that this phenomenon does not violate physical intuition, since the total entropy, including the self-entropies of the plate and the nanoparticle, should be positive. New calculations, in fact, seem to bear this out at least in certain cases.

8 pages, 12 figures, extended version of talk at Frontiers of Quantum and Mesoscopic Thermodynamics, Prague, 2015

References in corpus (8)

• Isoelectronic determination of the thermal Casimir force
• Thermal corrections to the Casimir effect
• Investigation of the Casimir interaction between two magnetic metals in comparison with nonmagnetic test bodies
• Lifshitz theory of atom-wall interaction with applications to quantum reflection
• Geometric origin of negative Casimir entropies: A scattering-channel analysis
• Disentangling geometric and dissipative origins of negative Casimir entropies
• Negative Casimir Entropies in Nanoparticle Interactions
• Anomalies in the specific heat of a free damped particle: The role of the cutoff in the spectral density of the coupling

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• Casimir Effect Invalidates the Drude Model for Transverse Electric Evanescent Waves
• The Nernst heat theorem for an atom interacting with graphene: Dirac model with nonzero energy gap and chemical potential
• Casimir Self-Entropy of a Spherical Electromagnetic $\delta$-Function Shell
• Casimir entropy and nonlocal response functions to the off-shell quantum fluctuations
• Quantum thermodynamics of overdamped modes in local and spatially dispersive materials
• Experimentum crucis for electromagnetic response of metals to evanescent waves and the Casimir puzzle
• Negativity of the Casimir self-entropy in spherical geometries
• The role of scalar current coupling along surfaces
• Casimir Self-Entropy of Nanoparticles with Classical Polarizabilities: Electromagnetic Field Fluctuations
• Blackbody thermodynamics in the presence of Casimir's effect
• Thermally Excited Quasiparticles in Metals, Dispersion Forces, and the Thermal Anomaly
• Recent solution to the Casimir puzzle awaits its experimental confirmation