2014/05/09 by Tsuneya Yoshida, Robert Peters, Satoshi Fujimoto +1
Mathematics · Physics and Astronomy · #Characterization (materials science) #Combinatorics #Condensed matter physics #Dimension (graph theory) #Mathematics #Mott insulator #Optics #Physics #Pure mathematics #Quantum many-body systems #Strong Light-Matter Interactions #Theoretical physics #Topological Materials and Phenomena #Topological insulator #Topology (electrical circuits) #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.112.196404
published as Phys. Rev. Lett. 112, 196404 (2014) · 8 pages, 6 figures, to be published in PRL
arxiv created 2014/05/09 · openalex publication_date 2014/05/16 · arxiv updated 2014/06/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 noninteracting 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 which has never been 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.