Emergent Fermi sea in a system of interacting bosons
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.
Keywords
Cite
@article{arxiv.1411.6918,
title = {Emergent Fermi sea in a system of interacting bosons},
author = {Ying-Hai Wu and Jainendra K. Jain},
journal= {arXiv preprint arXiv:1411.6918},
year = {2015}
}