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Metal-insulator transition and magnetism of SU(3) fermions in the square lattice
Eduardo Ibarra-García-Padilla, Chunhan Feng, Giulio Pasqualetti +4
We study the SU(3) symmetric Fermi-Hubbard model (FHM) in the square lattice at -filling using numerically exact determinant quantum Monte Carlo (DQMC) and numerical linked-cl…
Equation of State and Thermometry of the 2D SU() Fermi-Hubbard Model
Giulio Pasqualetti, Oscar Bettermann, Nelson Darkwah Oppong +6
We characterize the equation of state (EoS) of the SU() Fermi-Hubbard Model (FHM) in a two-dimensional single-layer square optical lattice. We probe the density and the site o…
Probing transport and slow relaxation in the mass-imbalanced Fermi-Hubbard model
Nelson Darkwah Oppong, Giulio Pasqualetti, Oscar Bettermann +4
Constraints in the dynamics of quantum many-body systems can dramatically alter transport properties and relaxation timescales even in the absence of static disorder. Here, we repo…
Quasiparticle lifetime of the repulsive Fermi polaron
Haydn S. Adlong, Weizhe Edward Liu, Francesco Scazza +5
We investigate the metastable repulsive branch of a mobile impurity coupled to a degenerate Fermi gas via short-range interactions. We show that the quasiparticle lifetime of this…
Localized magnetic moments with tunable spin exchange in a gas of ultracold fermions
Luis Riegger, Nelson Darkwah Oppong, Moritz Höfer +3
We report on the experimental realization of a state-dependent lattice for a two-orbital fermionic quantum gas with strong interorbital spin exchange. In our state-dependent lattic…
Direct probing of the Mott crossover in the SU() Fermi-Hubbard model
Christian Hofrichter, Luis Riegger, Francesco Scazza +4
The Fermi-Hubbard model (FHM) is a cornerstone of modern condensed matter theory. Developed for interacting electrons in solids, which typically exhibit SU() symmetry, it descri…
Observation of an orbital interaction-induced Feshbach resonance in 173-Yb
M. Höfer, L. Riegger, F. Scazza +6
We report on the experimental observation of a novel inter-orbital Feshbach resonance in ultracold 173-Yb atoms, which opens the possibility of tuning the interactions between the…
Observation of two-orbital spin-exchange interactions with ultracold SU(N)-symmetric fermions
F. Scazza, C. Hofrichter, M. Höfer +3
We report on the direct observation of spin-exchanging interactions in a two-orbital SU(N)-symmetric quantum gas of ytterbium in an optical lattice. The two orbital states are repr…
Probing the Superfluid to Mott Insulator Transition at the Single Atom Level
Waseem S. Bakr, Amy Peng, M. Eric Tai +6
Quantum gases in optical lattices offer an opportunity to experimentally realize and explore condensed matter models in a clean, tunable system. We investigate the Bose-Hubbard mod…
A quantum gas microscope - detecting single atoms in a Hubbard regime optical lattice
Waseem S. Bakr, Jonathon I. Gillen, Amy Peng +2
Recent years have seen tremendous progress in creating complex atomic many-body quantum systems. One approach is to use macroscopic, effectively thermodynamic ensembles of ultracol…