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Title: Theory of Casimir forces without the Proximity-Force approximation
Author: Lapas, Luciano Calheiros
Pérez Madrid, Agustín
Rubí Capaceti, José Miguel
Keywords: Teoria quàntica de camps
Teoria cinètica de la matèria
Quantum field theory
Kinetic theory of matter
Issue Date: 18-Mar-2016
Publisher: American Physical Society
Abstract: We analyze both the attractive and repulsive Casimir-Lifshitz forces recently reported in experimental investigations. By using a kinetic approach, we obtain the Casimir forces from the power absorbed by the materials. We consider collective material excitations through a set of relaxation times distributed in frequency according to a log-normal function. A generalized expression for these forces for arbitrary values of temperature is obtained. We compare our results with experimental measurements and conclude that the model goes beyond the proximity-force approximation.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2016, vol. 116, num. 11, p. 110601-110601-5
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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