Search for exotic spin-dependent interactions with a spin-exchange relaxation-free magnetometer

We propose a novel experimental approach to explore exotic spin-dependent interactions using a spin-exchange relaxation-free (SERF) magnetometer, the most sensitive noncryogenic magnetic-field sensor. This approach studies the interactions between optically polarized electron spins located inside a...

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Bibliographic Details
Published in:Physical review. D 2016-08, Vol.94 (3), Article 036002
Main Authors: Chu, P.-H., Kim, Y. J., Savukov, I.
Format: Article
Language:English
Subjects:
atomic and nuclear physics
Cosmology
Coupling
Electron spin
Estimates
Gravitation
Laser beams
Magnetic fields
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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Summary:We propose a novel experimental approach to explore exotic spin-dependent interactions using a spin-exchange relaxation-free (SERF) magnetometer, the most sensitive noncryogenic magnetic-field sensor. This approach studies the interactions between optically polarized electron spins located inside a vapor cell of the SERF magnetometer and unpolarized or polarized particles of external solid-state objects. The coupling of spin-dependent interactions to the polarized electron spins of the magnetometer induces the tilt of the electron spins, which can be detected with high sensitivity by a probe laser beam similarly as an external magnetic field. We estimate that by moving unpolarized or polarized objects next to the SERF Rb vapor cell, the experimental limit to the spin-dependent interactions can be significantly improved over existing experiments, and new limits on the coupling strengths can be set in the interaction range below 10 super(?2)m.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.94.036002