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arXiv · 1411.6918

Emergent Fermi sea in a system of interacting bosons

Ying-Hai Wu·Jainendra K. Jain
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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.

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Ying-Hai Wu, Jainendra K. Jain. 2015-07-01. Emergent Fermi sea in a system of interacting bosons. https://doi.org/10.1103/physreva.91.063623

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