Generalized SU(2) Proca theory

被引:53
作者
Allys, Erwan [1 ,2 ]
Peter, Patrick [1 ,2 ,3 ,4 ]
Rodriguez, Yeinzon [5 ,6 ,7 ]
机构
[1] UPMC Univ Paris 6, UMR 7095, Inst Astrophys Paris, 98 Bis Blvd Arago, F-75014 Paris, France
[2] CNRS, 98 Bis Blvd Arago, F-75014 Paris, France
[3] UPMC Univ Paris 6, Inst Lagrange Paris, F-75014 Paris, France
[4] Sorbonne Univ, CNRS, F-75014 Paris, France
[5] Univ Antonio Narino, Ctr Invest Ciencias Basicas & Aplicadas, Cra 3 Este 47A-15, Bogota 110231, Colombia
[6] Univ Ind Santander, Escuela Fis, Ciudad Univ, Bucaramanga 680002, Colombia
[7] Abdus Salam Int Ctr Theoret Phys, Str Costiera 11, I-34151 Trieste, Italy
关键词
PARTICLE PHYSICS MODELS; ABELIAN GAUGE-FIELDS; DARK ENERGY; INFLATION; QUANTIZATION; COSMOLOGY;
D O I
10.1103/PhysRevD.94.084041
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Following previous works on generalized Abelian Proca theory, also called vector Galileon, we investigate the massive extension of an SU(2) gauge theory, i.e., the generalized SU(2) Proca model, which could be dubbed non-Abelian vector Galileon. This particular symmetry group permits fruitful applications in cosmology such as inflation driven by gauge fields. Our approach consists in building, in an exhaustive way, all the Lagrangians containing up to six contracted Lorentz indices. For this purpose, and after identifying by group theoretical considerations all the independent Lagrangians which can be written at these orders, we consider the only linear combinations propagating 3 degrees of freedom and having healthy dynamics for their longitudinal mode, i.e., whose pure Stuckelberg contribution turns into the SU(2) multi-Galileon dynamics. Finally, and after having considered the curved space-time expansion of these Lagrangians, we discuss the form of the theory at all subsequent orders.
引用
收藏
页数:19
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