Spontaneous Broken Local Conformal Symmetry and Dark Energy Candidate

6th International Symposium on Quantum Theory and Symmetries

Liu, Lu-Xin^1,2

Department of Physics, Purdue University, West Lafayette, IN 47907, United States^1

National Institute for Theoretical Physics, Department of Physics and Centre for Theoretical Physics, University of the Witwatersrand, Wits, 2050, South Africa^2

关键词: Conformal symmetry;    Effective Lagrangian;    Energy scale;    Gravitational fields;    Higgs mechanism;    Local lorentz invariances;    Symmetry violation;    Vector fields;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/462/1/012031/pdf
DOI  :  10.1088/1742-6596/462/1/012031

来源: IOP

【 摘 要 】

The local conformal symmetry is spontaneously broken down to the Local Lorentz invariance symmetry through the approach of nonlinear realization. The resulting effective Lagrangian, in the unitary gauge, describes a cosmological vector field non-minimally coupling to the gravitational field. As a result of the Higgs mechanism, the vector field absorbs the dilaton and becomes massive, but with an independent energy scale. The Proca type vector field can be modelled as dark energy candidate. The possibility that it further triggers Lorentz symmetry violation is also pointed out.