论文标题
具有有或没有限制引起的相互作用效果范围的强烈相互作用的二维费米气体的伪合作制度
Pseudogap regime of a strongly interacting two-dimensional Fermi gas with and without confinement-induced effect range of interactions
论文作者
论文摘要
从理论上讲，我们研究了与有和没有负限制诱导的有效范围的强相关的二维费米气体的多体配对。使用正常状态下的强耦合有效场理论，我们表明，恒定体积的比热可以用作从正常费米液体到伪gap状态的特征指标。我们通过恒定体积的特定热量计算伪组形成温度，研究了负约束诱导的有效范围在超氟化过渡上方的多体配对上的作用。我们将有和没有有效范围的结果与Murthy等人的射频光谱进行了比较，有没有有效范围与[Science359，452-455（2018）]进行了比较。尽管发现了良好的定性协议，但我们无法区分实验数据中限制诱导的效应范围的效果。
We investigate theoretically the many-body pairing of a strongly correlated two-dimensional Fermi gas with and without negative confinement-induced effective range. Using a strong-coupling effective field theory in the normal state, we show that the specific heat at constant volume can be used as a characteristic indicator of the crossover from the normal Fermi liquid to the pseudogap state in two dimensions. We calculate the pseudogap formation temperature through the specific heat at constant volume, examining the role of a negative confinement-induced effective range on many-body pairing above the superfluid transition. We compare our results with and without effective range to the recent experimental measurement performed with radio-frequency spectroscopy in Murthy et al.[Science359, 452-455 (2018)]. Although a good qualitative agreement is found, we are not able to discriminate the effect of the confinement-induced effect range in the experimental data.
