Dirac lattice

被引:2
|
作者
Sochichiu, Corneliu [1 ,2 ]
机构
[1] Sungkyunkwan Univ, Univ Coll, Suwon 440746, South Korea
[2] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea
关键词
D O I
10.1088/1751-8113/46/1/015002
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We study the emergence of a Dirac fermionic field in the low energy description of non-relativistic dynamical models on graphs admitting a continuum limit. The Dirac fermionic field appears as the effective field describing the excitations above a point-like Fermi surface. Together with the Dirac fermionic field an effective space-time metric also emerges. We analyze the conditions for such Fermi points to appear in general, paying special attention to the cases of two and three spatial dimensions.
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页数:18
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