title: Phase diagram of the square-lattice three-state Potts antiferromagnet with a staggered polarization field.
authors.affiliation: Department of Physics, Tokyo Metropolitan University, Tokyo 192-0397, Japan.
authors.forename: Hiromi
authors.initials: H
authors.lastname: Otsuka
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Okabe