费米-哈伯德模型中基于优化辅助波函数的极化子关联
Polaronic correlations from optimized ancilla wave functions for the Fermi-Hubbard model.
作者信息
Müller Tobias, Thomale Ronny, Sachdev Subir, Iqbal Yasir
机构信息
Lehrstuhl für Theoretische Physik I, Institut für Theoretische Physik und Astrophysik and Würzburg-Dresden Cluster of Excellence ct.qmat, Julius-Maximilians-Universität Würzburg, Würzburg 97074, Germany.
Department of Physics, University of Zurich, Zurich 8057, Switzerland.
出版信息
Proc Natl Acad Sci U S A. 2025 May 20;122(20):e2504261122. doi: 10.1073/pnas.2504261122. Epub 2025 May 16.
We employ a family of ancilla qubit variational wave functions [Y.-H. Zhang and S. Sachdev, , 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 ., , 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.
我们采用一族辅助量子比特变分波函数[张宇 - 豪和萨奇德夫，《 》，023172 (2020)]来描述空穴掺杂二维费米 - 哈伯德模型赝能隙金属相中的极化子关联。与超冷原子量子模拟器数据[J. 科普塞尔等人，《 》，82 (2021)]的比较表明，从半填充到80%空穴掺杂，在定性和定量上都与数值分析一致，捕捉到了在约40%掺杂时观察到的从极化子 regime 到费米液体的转变。
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