An experiment, analogous to that of Cimmino et al., is proposed to measure the phase shift induced by static electric fields on the passage of neutrons through an interferometer when the path-enclosed linear charge density is zero. A finite shift is predicted and discussed in light of the Aharonov-Casher result.

• Received 2 July 1990

DOI:https://doi.org/10.1103/PhysRevLett.65.2217