title: Competing topological orders in the ν=12/5 quantum Hall state.
abstract: We provide numerical evidence that a p(x)-ip(y) paired Bonderson-Slingerland (BS) non-Abelian hierarchy state is a strong candidate for the observed ν=12/5 quantum Hall plateau. We confirm the existence of a gapped incompressible ν=12/5 quantum Hall state with shift S=2 on the sphere, matching that of the BS state. The exact ground state of the Coulomb interaction at S=2 is shown to have a large overlap with the BS trial wave function. Larger overlaps are obtained with BS-type wave functions that are hierarchical descendants of general p(x)-ip(y) weakly paired states at ν=5/2. We perform a finite-size scaling analysis of the ground-state energies for ν=12/5 states at shifts corresponding to the BS (S=2) and 3-clustered Read-Rezayi (S=-2) universality classes. This analysis reveals very tight competition between these two non-Abelian topological orders.
authors.affiliation: Station Q, Microsoft Research, Santa Barbara, California 93106-6105, USA.
authors.forename: Parsa
authors.initials: P
authors.lastname: Bonderson
authors.forename: Adrian E
authors.initials: AE
authors.lastname: Feiguin
authors.forename: Gunnar
authors.initials: G
authors.lastname: Möller
authors.forename: J K
authors.initials: JK
authors.lastname: Slingerland