# Flat-band-induced non-Fermi-liquid behavior of multicomponent fermions

@article{Kumar2020FlatbandinducedNB,
title={Flat-band-induced non-Fermi-liquid behavior of multicomponent fermions},
author={Pramod Kumar and Sebastiano Peotta and Yosuke Takasu and Yoshiro Takahashi and P{\"a}ivi T{\"o}rm{\"a}},
journal={Physical Review A},
year={2020}
}
• Published 11 May 2020
• Physics
• Physical Review A
We investigate multicomponent fermions in a flat band and predict experimental signatures of non-Fermi-liquid behavior. We use dynamical mean-field theory to obtain the density, double occupancy and entropy in a Lieb lattice for $\mathcal{N}=2$ and $\mathcal{N}=4$ components. We derive a mean-field scaling relation between the results for different values of $\mathcal{N}$, and study its breakdown due to beyond mean-field effects. The predicted signatures occur at temperatures above the N\'eel…
1 Citations

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