Translational anomaly of chiral fermions in two dimensions

被引：4

作者：

Beltran-Palau, Pau ^{[1
,2
]}

Navarro-Salas, Jose ^{[1
,2
]}

Pla, Silvia ^{[1
,2
]}

机构：

[1] Univ Valencia, Dept Fis Teor, Ctr Mixto, CSIC,Fac Fis, E-46100 Valencia, Spain

[2] Univ Valencia, IFIC, Ctr Mixto, CSIC,Fac Fis, E-46100 Valencia, Spain

来源：

PHYSICAL REVIEW D | 2019年 / 99卷 / 10期

关键词：

D O I：

10.1103/PhysRevD.99.105008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is well known that a quantized two-dimensional Weyl fermion coupled to gravity spoils general covariance and breaks the covariant conservation of the energy-momentum tensor. In this brief article, we point out that the quantum conservation of the momentum can also fail in flat spacetime, provided the Weyl fermion is coupled to a time-varying homogeneous electric field. This signals a quantum anomaly of the space-translation symmetry, which has not been highlighted in the literature so far.

引用

页数：5