4.6 Article

Optical atomic clock aboard an Earth-orbiting space station (OACESS): enhancing searches for physics beyond the standard model in space

期刊

QUANTUM SCIENCE AND TECHNOLOGY
卷 8, 期 1, 页码 -

出版社

IOP Publishing Ltd
DOI: 10.1088/2058-9565/ac9f2b

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dark matter; space; optical clock; fundamental physics

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This is a concept for a high-precision optical atomic clock operating on an Earth-orbiting space station, aiming to search for potential dark matter candidates near Earth's surface by comparing with terrestrial atomic clocks. It opens up the exploration of new physics models that are inaccessible to ground-based experiments.
We present a concept for a high-precision optical atomic clock (OAC) operating on an Earth-orbiting space station. This pathfinder science mission will compare the space-based OAC with one or more ultra-stable terrestrial OACs to search for space-time-dependent signatures of dark scalar fields that manifest as anomalies in the relative frequencies of station-based and ground-based clocks. This opens the possibility of probing models of new physics that are inaccessible to purely ground-based OAC experiments where a dark scalar field may potentially be strongly screened near Earth's surface. This unique enhancement of sensitivity to potential dark matter candidates harnesses the potential of space-based OACs.

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