Composite fermion state of spin-orbit-coupled bosons

Tigran A. Sedrakyan, Alex Kamenev, Leonid I. Glazman

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

We consider spinor Bose gas with the isotropic Rashba spin-orbit coupling in two dimensions. We argue that at low density, its ground state is a composite fermion state with a Chern-Simons gauge field and filling factor of one. The chemical potential of such a state scales with the density as μn3 /2. This is a lower energy per particle than μn for the earlier suggested ground-state candidates: a condensate with broken time-reversal symmetry and a spin-density wave state.

Original languageEnglish (US)
Article number063639
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume86
Issue number6
DOIs
StatePublished - Dec 28 2012

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