Emergent Fermi sea in a system of interacting bosons

Ying Hai Wu, J. K. Jain

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

An understanding of the possible ways in which interactions can produce fundamentally new emergent many-body states is a central problem of condensed-matter physics. We ask if a Fermi sea can arise in a system of bosons subject to contact interaction. Based on exact diagonalization studies and variational wave functions, we predict that such a state is likely to occur when a system of two-component bosons in two dimensions, interacting via a species-independent contact interaction, is exposed to a synthetic magnetic field of strength that corresponds to a filling factor of unity. The fermions forming the SU(2) singlet Fermi sea are bound states of bosons and quantized vortices, formed as a result of the repulsive interaction between bosons in the lowest Landau level.

Original languageEnglish (US)
Article number063623
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume91
Issue number6
DOIs
StatePublished - Jun 22 2015

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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