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.

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• Light-induced gauge fields for ultracold atoms
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• Radio-Frequency Spectroscopy of Ultracold Fermions
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• Bose-Einstein Condensates with Large Number of Vortices
• Atomic three-body loss as a dynamical three-body interaction
• Dirac, Anderson, and Goldstone on the Kagome
• Quantum Hall fractions in rotating Bose-Einstein condensates
• New Class of Non-Abelian Spin-Singlet Quantum Hall States
• Fermionization in an expanding 1D gas of hard-core bosons
• Band Structure of the Fractional Quantum Hall Effect
• A Composite Fermion Description of Rotating Bose-Einstein Condensates
• Quantum Hall physics in rotating Bose-Einstein condensates
• Composite Fermions in Quantum Dots
• Bose condensates at high angular momenta
• Emerging Bosons with Three-Body Interactions from Spin-1 Atoms in Optical Lattices
• Quantum Hall Effect of Two-Component Bosons at Fractional and Integral Fillings
• Non-Fermi-liquid d-wave metal phase of strongly interacting electrons
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Cited by in corpus (12)

• Composite fermi liquids in the lowest Landau level
• Non-commutative field theory and composite Fermi Liquids in some quantum Hall systems
• Emergent particle-hole symmetry in spinful bosonic quantum Hall systems
• Bosonic integer quantum Hall effect as topological pumping
• Quantum Hall phase diagram of two-component Bose gases: Intercomponent entanglement and pseudopotentials
• Quantum statistics transmutation via magnetic flux attachment
• Hall Viscosity of the Composite-Fermion Fermi Seas for Fermions and Bosons
• Phase diagram of $\nu =\frac{1}{2}+\frac{1}{2}$ bilayer bosons with inter-layer couplings
• Topological phases of two-component bosons in species-dependent artificial gauge potentials
• Exploring the nature of the emergent gauge field in composite-fermion metals: A large-scale microscopic study
• Vortex lattices in binary Bose-Einstein condensates: Collective modes, quantum fluctuations, and intercomponent entanglement
• Disorder-driven phase transitions in bosonic fractional quantum Hall liquids