Projects per year
Abstract
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 N=2 and N=4 components. We derive a mean-field scaling relation between the results for different values of N, and study its breakdown due to beyond mean-field effects. The predicted signatures occur at temperatures above the Néel temperature and persists even in the presence of a trapping potential, thus they are observable in current ultracold gas experiments.
| Original language | English |
|---|---|
| Article number | L031301 |
| Pages (from-to) | 1-7 |
| Number of pages | 7 |
| Journal | Physical Review A |
| Volume | 103 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 3 Mar 2021 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- Condensed Matter - Quantum Gases
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SUPERFLAT: Superfluidity, topology and disorder in lattice models with flat bands
01/09/2020 → 31/08/2023
Project: Academy of Finland: Other research funding
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SUPERFLAT: Superfluidity, topology and disorder in lattice models with flat bands
01/09/2020 → 31/08/2025
Project: Academy of Finland: Other research funding
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Long-range coherence in nanosystems
Pyykkönen, V., Törmä, P., Topp, G., Kumar, P., Salerno, G., Kliuiev, P., Moilanen, A., Julku, A. & Arjas, K.
01/01/2020 → 31/12/2021
Project: Academy of Finland: Other research funding