期刊
PHYSICAL REVIEW D
卷 85, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.85.124035
关键词
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资金
- State Scholarships Foundation (IKY) [1288]
- Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)
- FONDECYT [3120143]
We study a massive gravity theory which is Lorentz-violating all the way from ultraviolet to infrared energy scales. At short distances the theory breaks diffeomorphism invariance and time and space scale differently. Dynamical metric fields are introduced which, upon linearization over a Minkowski background, correspond to Lorentz-violating mass terms at large distances. We perform a scalar perturbation analysis and we show that with an appropriate choice of parameters, the theory is healthy without ghosts, tachyons, strong coupling problems, and instabilities.
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