Characterization of a topological Mott insulator in one dimension

Abstract

We investigate properties of a topological Mott insulator in one dimension by examining the bulk topological invariant and the entanglement spectrum of a correlated electron model. We clarify how gapless edge states in a non-interacting topological band insulator evolve into spinon edge states in a topological Mott insulator. Furthermore, we propose a topological Mott transition, which is a new type of topological phase transition and never observed in free fermion systems. This unconventional transition occurs in spin liquid phases in the Mott insulator and is accompanied by zeros of the single-electron Green's function and a gap closing in the spin excitation spectrum.

8 pages, 6 figures, to be published in PRL

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Cited by in corpus (10)

• Kaleidoscope of symmetry protected topological phases in one-dimensional periodically modulated lattices
• Spectral and Entanglement Properties of the Bosonic Haldane Insulator
• Topological magnetic excitations
• Simulating bosonic Chern insulators in one-dimensional optical superlattices
• Interaction driven polarization shift in the $t-V-V^{\prime }$ lattice fermion model at half filling: emergent Haldane phase
• Topological Mott transition in a Weyl-Hubbard model with dynamical mean-field theory
• Quasiparticle excitations in a one-dimensional interacting topological insulator: Application for dopant-based quantum simulation
• Fermionic Symmetry Protected Topological Phase Induced by Interactions
• Possibility of hole confinement in the weak coupling regime of one dimensional ising antiferromagnet and the emergence of spin-charge separation in the bulk limit
• Cutoff-independent RG flow equations for two-coupled chains model