Comment on 'Analytical and numerical verification of the Nernst theorem for metals'

Journal Article · Fri Feb 15 04:00:00 EST 2008 · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print)

DOI:https://doi.org/10.1103/PHYSREVE.77.023101· OSTI ID:21101940

Klimchitskaya, G L ^[1]; Mostepanenko, V M ^[1]

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1. Center of Theoretical Studies and Institute for Theoretical Physics, Leipzig University, D-04009, Leipzig (Germany)

Recently, Hoeye, Brevik, Ellingsen, and Aarseth [Phys. Rev. E 75, 051127 (2007)] claimed that the use of the Drude dielectric function leads to zero Casimir entropy at zero temperature in accordance with Nernst's theorem. We demonstrate that their proof is not applicable to metals with perfect crystal lattices having no impurities. Thus there is no contradiction with previous results in the literature proving that the Drude dielectric function violates the Nernst theorem for the Casimir entropy in the case of perfect crystal lattices. We also indicate that the approximation of temperature independent relaxation frequency used in the paper leads to incorrect values of numerical coefficients in the obtained asymptotic expressions for metals with impurities.

• OSTI ID: 21101940
• Journal Information: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print), Journal Name: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print) Journal Issue: 2 Vol. 77; ISSN 1539-3755
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
APPROXIMATIONS
ASYMPTOTIC SOLUTIONS
CASIMIR EFFECT
CRYSTAL LATTICES
DIELECTRIC MATERIALS
ENTROPY
FUNCTIONS
IMPURITIES
RELAXATION
VERIFICATION