Experimental Separation of Geometric and Dynamical Phases Using Neutron Interferometry
Apoorva G. Wagh, Veer Chand Rakhecha, Johann Summhammer +7 more
We present results of the first experiment clearly demarcating geometric and dynamical phases. These two phases arise from two distinct physical operations, a rotation and a linear translation, respectively, performed on two identical spin flippers in a neutron interferometer. A reversal of the current in one flipper results in a pure geometric phase shift of \ensuremath{\pi} radians. This observation constitutes the first direct verification of Pauli anticommutation, implemented in neutron interferometry.
Physical Review Letters•Feb 3, 1997•88 citations