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Precision Measurement Noise Asymmetry and Its Annual Modulation as a Dark Matter Signature

1
School of Mathematics and Physics, The University of Queensland, Brisbane, QLD 4072, Australia
2
Department of Physics, University of Nevada, Reno, NV 89557, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Jaume Haro Cases
Universe 2021, 7(3), 50; https://doi.org/10.3390/universe7030050
Received: 21 January 2021 / Revised: 15 February 2021 / Accepted: 24 February 2021 / Published: 28 February 2021
(This article belongs to the Special Issue Advances in Understanding Astrophysical and Atomic Phenomena)
Dark matter may be composed of self-interacting ultralight quantum fields that form macroscopic objects. An example of which includes Q-balls, compact non-topological solitons predicted by a range of theories that are viable dark matter candidates. As the Earth moves through the galaxy, interactions with such objects may leave transient perturbations in terrestrial experiments. Here we propose a new dark matter signature: an asymmetry (and other non-Gaussianities) that may thereby be induced in the noise distributions of precision quantum sensors, such as atomic clocks, magnetometers, and interferometers. Further, we demonstrate that there would be a sizeable annual modulation in these signatures due to the annual variation of the Earth velocity with respect to dark matter halo. As an illustration of our formalism, we apply our method to 6 years of data from the atomic clocks on board GPS satellites and place constraints on couplings for macroscopic dark matter objects with radii R<104km, the region that is otherwise inaccessible using relatively sparse global networks. View Full-Text
Keywords: clumpy dark matter; annual modulation; transient variation of fundamental constants; atomic clocks; quantum sensors clumpy dark matter; annual modulation; transient variation of fundamental constants; atomic clocks; quantum sensors
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MDPI and ACS Style

Roberts, B.M.; Derevianko, A. Precision Measurement Noise Asymmetry and Its Annual Modulation as a Dark Matter Signature. Universe 2021, 7, 50. https://doi.org/10.3390/universe7030050

AMA Style

Roberts BM, Derevianko A. Precision Measurement Noise Asymmetry and Its Annual Modulation as a Dark Matter Signature. Universe. 2021; 7(3):50. https://doi.org/10.3390/universe7030050

Chicago/Turabian Style

Roberts, Benjamin M., and Andrei Derevianko. 2021. "Precision Measurement Noise Asymmetry and Its Annual Modulation as a Dark Matter Signature" Universe 7, no. 3: 50. https://doi.org/10.3390/universe7030050

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