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Inhomogeneity-related cutoff dependence of the Casimir energy and stress
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering. Zhejiang University, China; South China Normal University, China .
2016 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 93, no 1, 013824Article in journal (Refereed) Published
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Abstract [en]

The Casimir stress and energy density are widely used to study the Casimir force, but they diverge in inhomogeneous systems, making the force seem to be infinite as well. Here we characterize the asymptotic behavior of the Casimir stress and energy density in inhomogeneous systems. We show an unambiguous map of all cutoff-dependent terms in the asymptotic expansion to the pressure and the surface tension through the insertion of multiple boundary layers. This result reveals an elegant subtraction to retrieve a finite stress that yields a cutoff-independent force.

Place, publisher, year, edition, pages
American Physical Society , 2016. Vol. 93, no 1, 013824
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-182855DOI: 10.1103/PhysRevA.93.013824ISI: 000368290900018Scopus ID: 2-s2.0-84955270495OAI: oai:DiVA.org:kth-182855DiVA: diva2:906541
Note

QC 20160224

Available from: 2016-02-24 Created: 2016-02-23 Last updated: 2016-02-24Bibliographically approved

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