当前位置: X-MOL 学术Phys. Rev. A › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Flat-band-induced non-Fermi-liquid behavior of multicomponent fermions
Physical Review A ( IF 2.9 ) Pub Date : 2021-03-03 , DOI: 10.1103/physreva.103.l031301
Pramod Kumar , Sebastiano Peotta , Yosuke Takasu , Yoshiro Takahashi , Päivi Törmä

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.

中文翻译:

平板带引起的多组分费米子的非费米液体行为

我们研究了一个平坦带中的多组分费米子,并预测了非费米液体行为的实验特征。我们使用动力学平均场理论来获得Lieb晶格中的密度,双重占有率和熵ñ=2个ñ=4成分。我们得出不同值的结果之间的均值场比例关系ñ,并研究由于超出平均场效应而导致的击穿。预测的特征出现在高于Néel温度的温度下,甚至在存在捕获势的情况下也持续存在,因此在当前的超冷气体实验中可以观察到。
更新日期:2021-03-03
down
wechat
bug