Search for exotic spin-dependent interactions with a spin-exchange relaxation-free magnetometer
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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. Lastly, 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 10–2 m.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC). Nuclear Physics (NP) (SC-26)
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1343701
- Report Number(s):
- LA-UR--16-23942
- Journal Information:
- Physical Review D, Journal Name: Physical Review D Journal Issue: 3 Vol. 94; ISSN PRVDAQ; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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| Calculations of the dominant long-range, spin-independent contributions to the interaction energy between two nonrelativistic Dirac fermions from double-boson exchange of spin-0 and spin-1 bosons with spin-dependent couplings 
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| Constraining exotic interactions | text | January 2018 | 
| Experimental limit on an exotic parity-odd spin- and velocity-dependent interaction using an optically polarized vapor | text | January 2019 | 
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