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Polaronic correlations from optimized ancilla wave functions for the Fermi-Hubbard model
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DOI：10.1073/pnas.2504261122.png)
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Abstract
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We employ a family of ancilla qubit variational wave functions [Y.-H. Zhang and Sachdev, Phys. Rev. Res. 2, 023172 (2020)] to describe the polaronic correlations the pseudogap metal phase of a hole-doped 2D Fermi-Hubbard model. Comparison to ultracold atom quantum simulator data [J. Koepsell etal., Science 374, 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.
Keywords:
pseudogap
cuprates
variational wave functions
spin liquid
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9.1
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10.8W
Citations:
73.5W
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