Dimensional reduction of a Lorentz- and CPT-violating Maxwell-Chern-Simons model -: art. no. 125011

被引：63

作者：

Belich, H

Ferreira, MM

Helayël-Neto, JA

Orlando, MTD

机构：

[1] CCP, Ctr Brasileiro Pesquisas Fis, Coordenacao Teoria Campos & Particulas, BR-22290180 Rio De Janeiro, Brazil

[2] Grp Fis Teor Jose Leite Lopes, Petropolis, RJ, Brazil

[3] Campus Univ Bacanga, Univ Fed Maranhao, Dept Fis, BR-65085580 Sao Luis, MA, Brazil

[4] Univ Fed Espirito Santo, Dept Quim & Fis, BR-29060900 Vitoria, Brazil

来源：

PHYSICAL REVIEW D | 2003年 / 67卷 / 12期

关键词：

D O I：

10.1103/PhysRevD.67.125011

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Taking as a starting point a Lorentz and CPT noninvariant Chern-Simons-like model defined in 1+3 dimensions, we proceed to realize its dimensional reduction to D=1+2. One then obtains a new planar model, composed by the Maxwell-Chern-Simons (MCS) sector, a Klein-Gordon massless scalar field, and a coupling term that mixes the gauge field to the external vector v(mu). In spite of breaking Lorentz invariance in the particle frame, this model may preserve CPT symmetry for a single particular choice of v(mu). Analyzing the dispersion relations, one verifies that the reduced model exhibits stability, but the causality can be jeopardized by some modes. The unitarity of the gauge sector is assured without any restriction, while the scalar sector is unitary only in the spacelike case.

引用

页数：10

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