Related papers: Survival acceleration

Survival acceleration

URL: http://arxiv.org/abs/2511.07195v1
Date: Mon, 10 Nov 2025 15:26:09 GMT
Title: Survival acceleration
Authors: Yakov Bloch, Avshalom C. Elitzur,
Abstract summary: We demonstrate a complementary effect: Longer-lived excited atoms turn out to have been accelerated.<n>An excited atom is prepared in a superposition of momenta.<n>We calculate the force and acceleration undergone by the atom due to the fact that it did not emit a photon.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Relativistic time dilation implies that an accelerating excited atom would have its lifetime prolonged in the lab frame. In this paper, we demonstrate a complementary effect: Longer-lived excited atoms turn out to have been accelerated. We propose the following experiment. An excited atom is prepared in a superposition of momenta. Due to relativistic time dilation, in the lab frame, the decay rate of components with higher momentum is diminished. As time passes without the atom emitting a photon, higher-momentum components become more probable. This results in a time-dependent shift of the expectation value of momentum. Taking into account first-order relativistic corrections, we calculate the force and acceleration undergone by the atom due to the fact that it did not emit a photon.

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