期刊
PHYSICAL REVIEW D
卷 104, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.104.083543
关键词
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资金
- National Natural Science Foundation of China [11975027, 11991053, 11721303]
- National SKA Program of China [2020SKA0120300]
- Max Planck Partner Group Program - Max Planck Society
This study investigates the Cubic Galileon massive gravity theory and its cosmological implications, demonstrating its consistency with observational results. Additionally, tensor perturbations within this model are examined, with the dispersion relation of gravitational waves shown to align with observational findings.
Cubic Galileon massive gravity is a development of de Rham-Gabadadze-Tolley massive gravity theory in which the space of the Stueckelberg field is broken. We consider the cubic Galileon term as a scalar field coupled to the graviton field. We present a detailed study of the cosmological aspects of this theory of gravity. We analyze self-accelerating solutions of the background equations of motion to explain the accelerated expansion of the Universe. Exploiting the latest Union2 type Ia supernovae (SNIa) dataset, which consists of 557 SNIa, we show that cubic Galileon massive gravity theory is consistent with the observations. We also examine the tensor perturbations within the framework of this model and find an expression for the dispersion relation of gravitational waves and show that it is consistent with the observational results.
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