Topological transport in a spin-orbit coupled bosonic Mott insulator

Abstract

We investigate topological transport in a spin-orbit coupled bosonic Mott insulator. We show that interactions can lead to anomalous quasi-particle dynamics even when the spin-orbit coupling is abelian. To illustrate the latter, we consider the spin-orbit coupling realized in the experiment of Lin \textit{et al}. [Nature (London) \textbf{471}, 83 (2011)]. For this spin-orbit coupling, we compute the quasiparticle dispersions and spectral weights, the interaction-induced momentum space Berry curvature, and the momentum space distribution of spin density, and propose experimental signatures. Furthermore, we find that in our approximation for the single-particle propagator, the ground state can in principle support an integer Hall conductivity if the sum of the Chern numbers of the hole bands is nonzero.

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Cited by in corpus (10)

• Degenerate Quantum Gases with Spin-Orbit Coupling
• Chiral Bosonic Phases on the Haldane Honeycomb Lattice
• The XYZ chain with Dzyaloshinsky-Moriya interactions: from spin-orbit-coupled lattice bosons to interacting Kitaev chains
• Thermal Phase Transitions of Strongly Correlated Bosons with Spin-Orbit Coupling
• Superfluid and magnetic states of an ultracold Bose gas with synthetic three-dimensional spin-orbit coupling in an optical lattice
• Topological invariant for two-dimensional open systems
• Spin-orbit Coupling in Optical lattices
• Superfluid-Mott insulator transition in spin-orbit coupled Bose-Hubbard Model
• Quasiparticle Berry curvature and Chern numbers in spin-orbit coupled bosonic Mott insulators
• Entanglement of condensed magnons via momentum-space fragmentation