Testing isotropy of the universe using the Ramsey resonance technique on ultracold neutron spins
I. Altarev; G. Ban; G. Bison; K. Bodek; M. Daum; M. Fertl; P. Fierlinger; B. Franke · 2010 · arXiv
WASTE classifies this as Negative / Null Result Report · AI classification, approximate
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Abstract (excerpt)
Physics at the Planck scale could be revealed by looking for tiny violations of fundamental symmetries in low energy experiments. In 2008, a sensitive test of the isotropy of the Universe using has been performed with stored ultracold neutrons (UCN), this is the first clock-comparison experiment performed with free neutrons. During several days we monitored the Larmor frequency of neutron spins in a weak magnetic field using the Ramsey resonance technique. An non-zero cosmic axial field, violating rotational symmetry, would induce a daily variation of the precession frequency. Our null result
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Metadata source: arXiv