2024
DOI: 10.1088/1367-2630/ad5758
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Third sound detectors in accelerated motion

Cameron R D Bunney,
Vitor S Barroso,
Steffen Biermann
et al.

Abstract: An accelerated observer moving through empty space sees particles appearing and disappearing, while an observer with a constant velocity does not register any particles. This phenomenon, generally known as the Unruh effect, relies on an initial vacuum state, thereby unifying the experience of all inertial observers. We propose an experiment to probe this observer-dependent detector response, using a laser beam in circular motion as a local detector of superfluid helium-4 surface modes or third sound waves. To … Show more

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