Interaction corrections to the minimal conductivity of graphene via dimensional regularization
Interaction corrections to the minimal conductivity of graphene via dimensional regularization
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DOI：
10.1209/0295-5075/107/57001
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发表时间：
2014-07
期刊：
影响因子：
--
通讯作者：
S. Teber;A. Kotikov
中科院分区：
文献类型：
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作者：
S. Teber;A. Kotikov
我们计算的双回路相互作用的修正的最小电导率的无序的本征石墨烯的帮助下，尺寸正规化。计算是通过两种不同的方式：通过密度-密度和通过电流-电流相关函数。在对微扰理论进行适当的重整化后，在这两种情况下，我们发现，其中是重整化精细结构常数，我们的结果是一致的实验不确定性和解决理论争议。
We compute the two-loop interaction correction to the minimal conductivity of disorder-free intrinsic graphene with the help of dimensional regularization. The calculation is done in two different ways: via density-density and via current-current correlation functions. Upon properly renormalizing the perturbation theory, in both cases, we find that , where is the renormalized fine structure constant and . Our results are consistent with experimental uncertainties and resolve a theoretical dispute.