Entanglement as a topological marker in harmonically confined attractive Fermi–Hubbard chains

We investigate the single-site von Neumann entropy along a harmonically confined superfluid chain, as described by the one-dimensional fermionic Hubbard model with strongly attractive interactions. We find that by increasing the confinement (or equivalently the particle filling), the system undergoe...

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Bibliographic Details
Main Authors: M. Sanino, I. M. Carvalho, V. V. França
Format: Article
Language:English
Published: AIP Publishing LLC 2025-06-01
Series:APL Quantum
Online Access:http://dx.doi.org/10.1063/5.0255322
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