Geothermal Casimir phenomena for the sphere-plate and cylinder-plate configurations

• Verfasst von: Weber, Alexej [VerfasserIn]
• Verfasst von: Gies, Holger [VerfasserIn]
• Titel: Geothermal Casimir phenomena for the sphere-plate and cylinder-plate configurations
• Verf.angabe: Alexej Weber and Holger Gies
• E-Jahr: 2010
• Jahr: 14 January 2010
• Umfang: 22 S.
• Illustrationen: Diagramme
• Fussnoten: Gesehen am 11.10.2023
• Titel Quelle: Enthalten in: Physical review / D
• Ort Quelle: [S.l.] : Soc., 1970
• Jahr Quelle: 2010
• Band/Heft Quelle: 82(2010), 12, Artikel-ID 125019, Seite 1-22
• ISSN Quelle: 1550-2368
• ISSN Quelle: 1089-4918
• DOI: doi:10.1103/PhysRevD.82.125019
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1861528442

Abstract

We investigate the nontrivial interplay between geometry and temperature in the Casimir effect for the sphere-plate and cylinder-plate configurations. At low temperature, the thermal contribution to the Casimir force is dominated by this interplay, implying that standard approximation techniques such as the proximity force approximation (PFA) are inapplicable even in the limit of small surface separation. Thermal fluctuations on scales of the thermal wavelength lead to a delocalization of the thermal force density at low temperatures. As a consequence, the temperature dependence strongly differs from naive expectations. Most prominently, thermal forces can develop nonmonotonic behavior below a critical temperature. We perform a comprehensive study of such geothermal phenomena in these Casimir geometries, using analytical and numerical worldline techniques for Dirichlet scalar fluctuations.