Lorentz and CPT tests with spin-polarized solids

@article{Bluhm2000LorentzAC,
  title={Lorentz and CPT tests with spin-polarized solids},
  author={Bluhm and Kosteleck{\'y}},
  journal={Physical review letters},
  year={2000},
  volume={84 7},
  pages={
          1381-4
        }
}
Experiments using macroscopic samples of spin-polarized matter offer exceptional sensitivity to Lorentz and CPT violation in the electron sector. Data from existing experiments with a spin-polarized torsion pendulum provide sensitivity in this sector rivaling that of all other existing experiments and could reveal spontaneous violation of Lorentz symmetry at the Planck scale. 
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