title: Kinematic approach to the mixed state geometric phase in nonunitary evolution.
authors.affiliation: Department of Physics, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260.
authors.forename: D M
authors.initials: DM
authors.lastname: Tong
authors.forename: E
authors.initials: E
authors.lastname: Sjöqvist
authors.forename: L C
authors.initials: LC
authors.lastname: Kwek
authors.forename: C H
authors.initials: CH
authors.lastname: Oh