Abstract
We derive the quantum phase accompanying a neutral particle (with no permanent electric dipole moment) moving in an area where a nonuniform electric field and a uniform magnetic field are simultaneously applied. Such a quantum phase can be ascribed to the sum of the Aharonov-Bohm phases of the charges constituting the neutral particle. An experimental configuration much more practical than a previous suggestion is proposed to test for the phase. The possible nonzero superfluid velocity in the ground state of the condensate is theoretically demonstrated.
- Received 11 October 1994
DOI:https://doi.org/10.1103/PhysRevLett.75.2071
©1995 American Physical Society