Holographic fermions with running chemical potential and dipole coupling
Holographic fermions with running chemical potential and dipole coupling
复制标题
具有运行化学势和偶极耦合的全息费米子
DOI：
10.1016/j.nuclphysb.2013.11.005
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发表时间：
2013
影响因子：
2.8
通讯作者：
Kuang Xiao-Mei
中科院分区：
文献类型：
--
作者：
Fang Li Qing;Ge Xian-Hui;Kuang Xiao-Mei
我们研究了具有运动化学势的极端R荷电黑洞背景中的全息费米子的性质，以及费米子与体中规范场的偶极耦合.我们发现，虽然运行的化学势影响费米面的位置，但它并不改变费米子的类型。我们还研究了费米能隙的起始点以及运动化学势和偶极耦合对差距的影响。研究了极限ω→ 0时的谱函数和费米液体的存在性。运动化学势和偶极耦合共同作用可以使非费米液体成为朗道-费米型。
We explore the properties of the holographic fermions in extremal R-charged black hole background with a running chemical potential, as well as the dipole coupling between fermions and the gauge field in the bulk. We find that although the running chemical potential effect the location of the Fermi surface, it does not change the type of fermions. We also study the onset of the Fermi gap and the gap effected by running chemical potential and the dipole coupling. The spectral function in the limit ω→ 0 and the existence of the Fermi liquid are also investigated. The running chemical potential and the dipole coupling altogether can make a non-Fermi liquid become the Landau–Fermi type.