Acceleration-induced spectral blind spots in stimulated atomic transitions

• URL: http://arxiv.org/abs/2606.17396v1
• Date: Tue, 16 Jun 2026 01:14:20 GMT
• Title: Acceleration-induced spectral blind spots in stimulated atomic transitions
• Abstract summary: Stimulated transitions are among the most fundamental processes in light-matter interaction.<n>We show that uniform acceleration can convert this familiar response into a frequency-selective absence of response.
• Score: 7.02830477425001
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Stimulated transitions are among the most fundamental processes in light-matter interaction, underlying resonant absorption and emission in atomic systems. Here we show that uniform acceleration can convert this familiar response into a frequency-selective absence of response. Specifically, when an incident photon has a nonzero momentum component transverse to the acceleration, the stimulated transition probability vanishes at a discrete set of frequencies fixed by the acceleration, the atomic transition frequency, and the photon propagation angle. At these spectral blind spots, both ordinary stimulated absorption and acceleration-induced excitation are simultaneously suppressed, rendering the atom effectively unresponsive to the incident radiation. The effect arises from the nontrivial response of accelerated atoms to quantum vacuum fluctuations and provides a distinctive signature of the Unruh effect through the absence, rather than the enhancement, of stimulated transitions. We further provide an order-of-magnitude estimate showing that an electron-based implementation with spin splitting in combined electric and magnetic fields could access the required parameter regime. These results reveal an unexplored form of acceleration-modified light-matter interaction and identify spectral blind spots as a new manifestation of the Unruh effect.

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