Exactly solvable chain of interacting electrons with correlated hopping and pairing
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Publication:2233985
DOI10.1016/J.PHYSLETA.2019.125951zbMATH Open1479.82022arXiv1905.01087OpenAlexW2972965508WikidataQ127318992 ScholiaQ127318992MaRDI QIDQ2233985
Publication date: 12 October 2021
Published in: Physics Letters. A (Search for Journal in Brave)
Abstract: A generalization of the Mattis-Nam model (J.Math.Phys., 13 (1972), 1185), which takes into account a correlated hopping and pairing of electrons, is proposed, its exact solution is obtained. In the framework of the model the stability of the zero energy Majorana fermions localized at the boundaries is studied in the chain in which electrons interact through both the on-site Hubbard interaction and the correlated hopping and pairing. The ground-state phase diagram of the model is calculated, the region of existence of topological states is determined. It is shown that low-energy excitations destroy bonds between electrons in the chain, leading to an insulator state.
Full work available at URL: https://arxiv.org/abs/1905.01087
Quantum field theory on lattices (81T25) Lattice systems (Ising, dimer, Potts, etc.) and systems on graphs arising in equilibrium statistical mechanics (82B20)
Cites Work
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