Holographic non-relativistic fermionic fixed point and bulk dipole coupling

Holographic non-relativistic fermionic fixed point and bulk dipole coupling
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全息非相对论费米子定点和体偶极子耦合

DOI:
10.1007/jhep11(2011)018
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发表时间:
2011-10
期刊:
The Journal of High Energy Physics
影响因子:
--
通讯作者:
Hongbao Zhang
Hongbao Zhang
中科院分区:
其他
文献类型:
--
作者:
Wei-Jia Li;Hongbao Zhang

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受最近发现的非相对论性费米子不动点的启发,我们研究了体偶极耦合的存在如何改变这些新不动点的谱函数。因此,尽管在体偶极耦合和化学势的存在下,无限平带总是可见的,但在小动量时,该带以显著的方式被修改,直到体偶极耦合的数量级。另一方面,当体偶极耦合被进一步推高,例如遮蔽电荷参数时,就像凤凰一样,新的费米表面从形成的间隙中萌发,这与相对论固定点处发现的明显不同。
A bstractInspired by the recently discovered non-relativistic fermionic fixed points, we investigate how the presence of bulk dipole coupling modifies the spectral function at one of these novel fixed points. As a result, although the infinite flat band is always visible in the presence of the bulk dipole coupling as well as chemical potential, the band is modified in a remarkable way at small momenta up to the order of magnitude of bulk dipole coupling. On the other hand, like a phoenix, a new Fermi surface sprouts from the formed gap when the bulk dipole coupling is pushed up further such as to overshadow the charge parameter, which is obviously different from what is found at the relativistic fixed points.
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