Measuring 2-, 3-, 4-, and 5-point spin and charge correlations in the doped Fermi-Hubbard model

ORAL

Abstract

Even after decades of intense studies, a complete picture of the quantum phases of doped antiferromagnets at temperatures above the high-Tc superconductor is still lacking. With our Fermi gas microscope, we started systematic quantum simulations of homogeneously doped Hubbard systems reaching temperatures as low as 0.25 of the tunneling energy. We calculate multi-point spin and charge correlators and explore the onset of the highly debated pseudogap phase, comparing our results with advanced numerical methods based on QMC (Quantum Monte Carlo) and METTS (Minimally Entangled Typical Thermal State). Finding strong 3-, 4-, and 5-point correlators, we study the emergence and breakdown of polarons and magnetic strings attached to dopants.

*MPG, Horizon Europe (project 101113690, PASQuanS2.1), BMBF (13N15890, FermiQP) and Germany’s Excellence Strategy (EXC-2111-390814868, MCQST).

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Presenters

  • Petar Bojović

    • Max Planck Institute of Quantum Optics

Authors

  • Petar Bojović

    • Max Planck Institute of Quantum Optics

  • Thomas Chalopin

    • Max Planck Institute of Quantum Optics

  • Dominik Bourgund

    • Max Planck Institute of Quantum Optics

  • Titus Franz

    • Max Planck Institute of Quantum Optics

  • Si Wang

    • Max Planck Institute of Quantum Optics

  • Johannes Obermeyer

    • Max Planck Institute of Quantum Optics

  • Annabelle Bohrdt

    • Harvard University and ITAMP
    • University of Regensburg

  • Fabian Grusdt

    • LMU Munich

  • Zhenjiu Wang

    • LMU Munich

  • Lode Pollet

    • LMU Munich

  • Aritra Sitha

    • Max Planck Institute for the Physics of Complex Systems

  • Alexander Wietek

    • Max Planck Institute for the Physics of Complex Systems

  • Antoine Georges

    • College de France

  • Immanuel Bloch

    • Max Planck Institute for Quantum Optics

  • Timon A Hilker

    • Max Planck Institute of Quantum Optics