Neutron interferometry in a rotating frame of reference

Details Neutron interferometry in a rotating frame of reference Neutron interferometry in a rotating frame of reference

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phrvl..61.2639m&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 61, Dec. 5, 1988, p. 2639-2642.

Physics

149

Angular Momentum, Interferometry, Neutron Physics, Phase Shift, Rotating Bodies, Beam Splitters, De Broglie Wavelengths, Frames, Gravitational Fields, Hamiltonian Functions, Spin Dynamics, Fundamental Problems And General Formalism

Scientific paper

The physical basis for the description of phenomena by a rotating observer is investigated. A simple, yet tentative, extension of the hypothesis of locality is used to determine the interference phase shift induced by the rotation of a neutron interferometer. The result consists of the Sagnac term, which is due to the coupling of the orbital angular momentum of the neutron with the rotation of the frame, and a new term which arises from a similar coupling because of the neutron spin. The latter effect is generally smaller than the Sagnac phase shift by the ratio of de Broglie wavelength of the neutron to the dimension of the interferometer. The possibility of detecting the new effect is briefly discussed.

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