Geometric phases in electric dipole searches with spin-1/2 particles from spin dependent Schrödinger equation

Abstract

Geometric phases of trapped particles have been recognized as potential sources of false signals in experiments searching for a permanent electric dipole moment of the neutron. We present a new analysis that treats the spin fully quantum mechanically and uses the same model system as previous works based on semi-classical methods. The results are similar but exhibit significant differences in some respects.

6 pages, 2 figures. This paper has been withdrawn due to errors in some derivations. A corrected and extended version has been published in Phys. Rev. A 89, 052129 (2014) and archived under arXiv:1403.0861