Decay of uniformly rotating particles

• URL: http://arxiv.org/abs/2510.18670v1
• Date: Tue, 21 Oct 2025 14:24:27 GMT
• Title: Decay of uniformly rotating particles
• Authors: Luciano Petruzziello, Martin B. Plenio,
• Abstract summary: We show how the tree-level decay rate of an inverse-$beta$ process involving scalar fields does not require the introduction of a thermal bath in the comoving frame to be a scalar under general coordinate transformations.<n>We interpret any decay process as an emission of negative-energy quanta, whose existence is motivated by the absence of a global vacuum state for uniformly rotating observers.
• Score: 0.42970700836450476
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this paper, we revisit the interpretation of the circular Unruh effect. To this aim, we rely on the principle of general covariance applied to the decay properties of non-inertial particles. Specifically, we show how the tree-level decay rate of an inverse-$\beta$ process involving scalar fields does not require the introduction of a thermal (or non-thermal) bath in the comoving frame to be a scalar under general coordinate transformations. Instead, we interpret any decay process as an emission of negative-energy quanta, whose existence is motivated by the absence of a global vacuum state for uniformly rotating observers. This implies that, in principle, no uniformly rotating particle can be regarded as stable.

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