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Breakdown of Fluctuational Electrodynamics in the Extreme Near Field

Announce Type: cross Abstract: Fluctuational electrodynamics relies on the assumption that thermal fluctuations in distinct bodies are statistically independent. We show that this approximation breaks down in the extreme near-field regime, where overlapping evanescent surface fields hybridize optical phonons across nanometric vacuum gaps and generate fluctuating-current cross correlations between opposite interfaces.

arXiv Physics 6d ago