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

@article{Kumar2021FlatbandinducedNB, 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={2021} }

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…

## One Citation

### Kondo lattice mediated interactions in flat-band systems

- PhysicsPhysical Review Research
- 2021

Electronic flat bands represent a paradigmatic platform to realize strongly correlated matter due to their associated divergent density of states. In common instances, including electron-electron…

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