Heat kernel Coefficients and Divergencies of the Casimir Energy for the Dispersive Sphere

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dc.creatorBordag, M.
dc.creatorKirsten, K.
dc.date2001-10-24
dc.date.accessioned2026-07-07T11:10:02Z
dc.date.available2026-07-07T11:10:02Z
dc.descriptionThe first heat kernel coefficients are calculated for a dispersive ball whose permittivity at high frequency differs from unity by inverse powers of the frequency. The corresponding divergent part of the vacuum energy of the electromagnetic field is given and ultraviolet divergencies are seen to be present. Also in a model where the number of atoms is fixed the pressure exhibits infinities. As a consequence, the ground-state energy for a dispersive dielectric ball cannot be interpreted easily.
dc.description8 pages, Contribution to the 5th Workshop on Quantum Field Theory under the Influence of External Conditions, Leipzig, Germany, 10-14 Sep 2001
dc.identifierhttps://arxiv.org/abs/hep-th/0110217
dc.identifierhttp://arxiv.org/abs/hep-th/0110217
dc.identifierInt.J.Mod.Phys.A17:813-819,2002
dc.identifierdoi:10.1142/S0217751X02010170
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190670
dc.subjectHigh Energy Physics - Theory
dc.titleHeat kernel Coefficients and Divergencies of the Casimir Energy for the Dispersive Sphere
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