title: Feiguin and Fisher reply.
authors.affiliation: Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA.
authors.forename: Adrian E
authors.initials: AE
authors.lastname: Feiguin
authors.affiliation: Department of Physics, University of California, Santa Barbara, California 93106, USA.
authors.forename: Matthew P A
authors.initials: MP
authors.lastname: Fisher