Fermions with cubic and quartic spectrum

被引：23

作者：

Heikkila, T. T. ^{[1
]}

Volovik, G. E. ^{[1
,2
]}

机构：

[1] Aalto Univ, Sch Sci & Technol, Low Temp Lab, FI-00076 Aalto, Finland

[2] Russian Acad Sci, Landau Inst Theoret Phys, Moscow 119334, Russia

来源：

JETP LETTERS | 2010年 / 92卷 / 10期

基金：

芬兰科学院; 欧洲研究理事会;

关键词：

SUPERFLUID SYSTEMS; NEUTRINOS; VIOLATION; HOMOTOPY; ABSENCE; LATTICE; HE-3-A; MODEL; ZEROS;

D O I：

10.1134/S0021364010220091

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study exotic fermions with spectrum E (2) ae p (2N) . Such spectrum emerges in the vicinity of the Fermi point with multiple topological charge N, if special symmetry is obeyed. When this symmetry is violated, the multiple Fermi point typically splits into N elementary Fermi points, i.e., Dirac points with N = 1 and spectrum E (2) ae p (2).

引用

页码：681 / 686

页数：6

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