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Detection of Ultralight Dark Matter and Spatial Variation of Fundamental Constants with Space Quantum Sensors

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Detection of Ultralight Dark Matter and Spatial Variation of Fundamental Constants with Space Quantum Sensors

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  • Author: Joshua Eby, Yu-Dai Tsai
We propose a clock-comparison space mission with two clocks on board, in orbits near the Sun, to search for an ultralight dark matter halo bound to the Sun, partly motivated by the NASA Deep Space Atomic Clock and Parker Solar Probe. We show that the projected sensitivities of space-based clocks exceed the reach of Earth-based clocks by orders of magnitude, probing dark matter motivated by the naturalness of the Higgs mass. Another primary goal of our proposal is to test the potential spatial variations of fundamental constants, improving the Earth-based limits by two orders of magnitude

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