Abstract
We characterize the equation of state (EoS) of the Fermi-Hubbard Model (FHM) in a two-dimensional single-layer square optical lattice. We probe the density and the site occupation probabilities as functions of interaction strength and temperature for , 4, and 6. Our measurements are used as a benchmark for state-of-the-art numerical methods including determinantal quantum Monte Carlo and numerical linked cluster expansion. By probing the density fluctuations, we compare temperatures determined in a model-independent way by fitting measurements to numerically calculated EoS results, making this a particularly interesting new step in the exploration and characterization of the FHM.
- Received 30 May 2023
- Accepted 9 January 2024
DOI:https://doi.org/10.1103/PhysRevLett.132.083401
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Open access publication funded by the Max Planck Society.
Published by the American Physical Society
Physics Subject Headings (PhySH)
synopsis
A General Equation of State for a Quantum Simulator
Published 23 February 2024
Researchers have characterized the thermodynamic properties of a model that uses cold atoms to simulate condensed-matter phenomena.
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