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Sign of the Casimir force between two bodies coupled to a Dirac field
Phys. Rev. D 112, 025009 – Published 15 July, 2025
DOI: https://doi.org/10.1103/6dns-7t3s
Abstract
We apply the result of Kenneth and Klich [Phys. Rev. Lett. 97, 160401 (2006)] to derive a theorem for two objects coupled to a Dirac field. We demonstrate that a sufficient condition for the Casimir interaction to be repulsive is for their geometric configuration to be odd under the same reflection operation considered in that work.
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