Quantum Hall States in rapidly rotating two-component bose gases

Shunsuke Furukawa, Masahito Ueda

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

We investigate strongly correlated phases of two-component (or pseudospin-1/2) Bose gases under rapid rotation through exact diagonalization on a torus geometry. In the case of pseudospin-independent contact interactions, we find the formation of gapped spin-singlet states at the filling factors ν=k/3+k/3 (k/3 filling for each component) with integer k. We present numerical evidences that the gapped state with k=2 is well described as a non-Abelian spin-singlet (NASS) state, in which excitations feature non-Abelian statistics. Furthermore, we find the phase transition from the product of composite fermion states to the NASS state by changing the ratio of the intercomponent-to-intracomponent interactions.

Original languageEnglish
Article number031604
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume86
Issue number3
DOIs
Publication statusPublished - 2012 Sep 17
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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