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- W4289597612 abstract "Higher-order topological crystalline phases in low-dimensional interacting quantum systems represent a challenging and largely unexplored research topic. Here, we derive a Hamiltonian describing fermions interacting through correlated hopping processes that break chiral invariance, but preserve both inversion and time-reversal symmetries. In this way, we show that our one-dimensional model gives rise to an interacting second-order topological insulating phase that supports gapped edge states. The topological nature of such interacting phase turns out to be revealed by both long-range order of a non-local string correlation function and by even degeneracy of the entanglement spectrum. For strong interactions we instead find that the topological crystalline phase is destroyed and replaced by a singlet superconducting phase. The latter, characterized by local fermionic pairing, turns out to appear both in a homogeneous and in a phase separated form. Relevantly, the derived one-dimensional model and the second-order topological insulator can be explored and investigated in atomic quantum simulators." @default.
- W4289597612 created "2022-08-03" @default.
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- W4289597612 date "2022-08-01" @default.
- W4289597612 modified "2023-09-24" @default.
- W4289597612 title "Interacting second-order topological insulators in one-dimensional fermions with correlated hopping" @default.
- W4289597612 doi "https://doi.org/10.48550/arxiv.2208.00939" @default.
- W4289597612 hasPublicationYear "2022" @default.
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