Phys. Rev. E 76, 066605 (2007) [10 pages]Feigel effect: Extraction of momentum from vacuum?Received 17 July 2007; revised 16 October 2007; published 11 December 2007 The Green-function formalism for the electromagnetic field in a magnetoelectric (ME) medium is constructed as a generalization of conventional Casimir theory. Zero temperature is assumed. It is shown how the formalism predicts electromagnetic momentum to be extracted from the vacuum field, just analogous to how energy is extracted in the Casimir case. The possibility of extracting momentum from vacuum was discussed recently by Feigel Phys. Rev. Lett. 92 020404 (2004). In contrast to Feigel’s approach, we assume that the ME coupling occurs naturally, rather than being produced by external strong fields. We also find the same effect qualitatively via another route by considering one single electromagnetic mode. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.76.066605
DOI:
10.1103/PhysRevE.76.066605
PACS:
03.50.De, 42.50.Nn, 12.20.−m, 42.50.Vk
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