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arXiv · 2607.05530

Localized zero modes enhance massive Casimir interactions

Jose M. Muñoz-Castañeda·Inés Cavero-Peláez·Gonzalo Sancho-Garrido
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Abstract

Massive quantum fields usually mediate Casimir interactions that are exponentially screened beyond their Compton wavelength. We show that an isolated normalizable zero mode in a classical background opens a low-frequency collective channel that bypasses this screening. The effective interaction is universal, controlled only by the zero-mode profile. Kinks and planar domain walls provide robust realizations, with the sine-Gordon/P\"oschl--Teller kink as an exactly solvable example. Localized zero modes thus define a generic infrared mechanism for modifying massive vacuum forces.

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Jose M. Muñoz-Castañeda, Inés Cavero-Peláez, Gonzalo Sancho-Garrido. 2026-07-06. Localized zero modes enhance massive Casimir interactions. https://arxiv.org/abs/2607.05530

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