Polaronic correlations from optimized ancilla wave functions for the Fermi-Hubbard model

Abstract

We employ a family of ancilla qubit variational wave-functions [Zhang and Sachdev, Phys. Rev. Res. 2, 023172 (2020)] to describe the polaronic correlations in the pseudo-gap metal phase of a hole-doped 2D Fermi-Hubbard model. Comparison to ultra-cold atom quantum simulator data [Koepsel et al., 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.

7 pages, 3 figures

References in corpus (9)

• Weak magnetism and non-Fermi liquids near heavy-fermion critical points
• Evolution of electronic structure of doped Mott insulators - reconstruction of poles and zeros of Green's function
• Algebraic charge liquids
• Crossover between BCS Superconductor and Doped Mott Insulator of d-wave Pairing State in Two-Dimensional Hubbard Model
• Microscopic spinon-chargon theory of magnetic polarons in the t-J model
• Breakup of the Fermi surface near the Mott transition in low-dimensional systems
• Accurate Simulation of the Hubbard Model with Finite Fermionic Projected Entangled Pair States
• Numerical results on the short-range spin correlation functions in the ground state of the two-dimensional Hubbard model
• Emergent polaronic correlations in doped spin liquids

Cited by in corpus (5)

• Quantum oscillations in the hole-doped cuprates and the confinement of spinons
• Altermagnetic polarons: the fate of alter magnetic band splittings at strong coupling
• Fractionalized Fermi liquids and the cuprate phase diagram
• Learning topological states from randomized measurements using variational tensor network tomography
• Thermopower across Fermi-volume-changing quantum phase transitions without translational symmetry breaking