Polaronic correlations from optimized ancilla wave functions for the Fermi-Hubbard model.
basic_science · Level V
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- Record sourced from PubMed, PMID 40377992.
- Also identified by DOI 10.1073/pnas.2504261122 and PMC identifier 12107177.
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Abstract
We employ a family of ancilla qubit variational wave functions [Y.-H. Zhang and S. Sachdev, <i>Phys. Rev. Res.</i> <b>2</b>, 023172 (2020)] to describe the polaronic correlations in the pseudogap metal phase of a hole-doped 2D Fermi-Hubbard model. Comparison to ultracold atom quantum simulator data [J. Koepsell <i>et al</i>., <i>Science</i> <b>374</b>, 82 (2021)] reveals both qualitative and quantitative agreement with the numerical analysis from half-filling up to 80% hole-doping, capturing the crossover from the polaronic regime to the Fermi liquid observed around 40% doping.