Nonlocal microscopic theory of Casimir forces at finite temperature
- Donostia International Physics Center (DIPC), P. Manuel de Lardizabal, ES-20018 San Sebastian, Basque Country (Spain)
- Maritime Department, University of Zadar, M. Pavlinovica b.b., HR-23000 Zadar (Croatia)
The interaction energy between two metallic slabs in the retarded limit at finite temperature is expressed in terms of surface polariton propagators for separate slabs, avoiding the usual matching procedure, with both diamagnetic and paramagnetic excitations included correctly. This enables appropriate treatment of arbitrary electron density profiles and fully nonlocal electronic response, including both collective and single-particle excitations. The results are verified by performing the nonretarded and long-wavelength (local) limits and showing that they reduce to the previously obtained expressions. Possibilities for practical use of the theory are explored by applying it to calculation of various contributions to the Casimir energy between two silver slabs.
- OSTI ID:
- 21538292
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 83, Issue 16; Other Information: DOI: 10.1103/PhysRevB.83.165421; (c) 2011 American Institute of Physics; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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