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arXiv · 1407.4212

$δ-δ^\prime$ generalized Robin boundary conditions and quantum vacuum fluctuations

J. M. Munoz-Castaneda·J. Mateos Guilarte
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Abstract

The effects induced by the quantum vacuum fluctuations of one massless real scalar field on a configuration of two partially transparent plates are investigated. The physical properties of the infinitely thin plates are simulated by means of Dirac-$δ-δ^\prime$ point interactions. It is shown that the distortion caused on the fluctuations by this external background gives rise to a generalization of Robin boundary conditions. The $T$-operator for potentials concentrated on points with non defined parity is computed with total generality. The quantum vacuum interaction energy between the two plates is computed using the $TGTG$ formula to find positive, negative, and zero Casimir energies. The parity properties of the $δ-δ^\prime$ potential allow repulsive quantum vacuum force between identical plates.

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J. M. Munoz-Castaneda, J. Mateos Guilarte. 2015-01-11. $δ-δ^\prime$ generalized Robin boundary conditions and quantum vacuum fluctuations. https://doi.org/10.1103/physrevd.91.025028

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