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quant-ph2015★ 15 cited
Disentangling geometric and dissipative origins of negative Casimir entropies
Stefan Umrath, Michael Hartmann, Gert-Ludwig Ingold +1
Dissipative electromagnetic response and scattering geometry are potential sources for the appearance of a negative Casimir entropy. We show that the dissipative contribution famil…
quant-ph2014★ 17 cited
Geometric origin of negative Casimir entropies: A scattering-channel analysis
Gert-Ludwig Ingold, Stefan Umrath, Michael Hartmann +4
Negative values of the Casimir entropy occur quite frequently at low temperatures in arrangements of metallic objects. The physical reason lies either in the dissipative nature of…