New Experimental Limits on Exotic Spin- and Velocity-dependent Interactions Using Rotationally Modulated Source-masses and an Atomic-magnetometer Array

Abstract

We conducted laboratory searching for the exotic spin- and velocity-dependent new interactions according to the previously proposed experimental scheme. Two $\sim$6Kg heavy source masses are rotationally modulated at a frequency of 20Hz. Four identical atomic magnetometers are used in an array form to increase the statistics and cancel the common-mode noise. Data processing method based on high precision numerical integration is applied for the four harmonic frequencies of the signal. The rotation direction of the source masses was reversed to flip the signal. Thus the [1,-3,3,-1] weighting method can be applied to remove possible slow drifting further. The experiment method has noise reduction features, and new constraints for Vector-Axial and Axial-Axial were obtained. The new constraints on VA improved by as much as more than four orders, on AA by as much as two orders in the corresponding force range, respectively.

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Cited by in corpus (6)

• New Constraints on Exotic Spin-Velocity-Dependent Interactions
• Spin-dependent exotic interactions
• Searches for exotic spin-dependent interactions with spin sensors
• Using Earth to Search for Long-Range Spin-Velocity Interactions
• Improved limits on the spin- and velocity-dependent exotic interaction in the micrometer range
• Constraints on Axion Dark Matter by Spin-Dependent Macroscopic Force