Reconstruction of lagrangian from a massive scalar field
arXiv:1809.04955 · doi:10.1007/s10714-019-2655-6
Abstract
We present a reconstruction of the Lagrangian for gravity by using a massive scalar field. The scalar field is minimally coupled to the action of gravity. We demonstrate the use of a theorem based on invertible point transformation of anharmonic oscillator equation that has only recently been applied to gravitational physics. This avenue gives us a direct way to solve the field equations for a few well-known self-interaction potential of the scalar field. A few cases which do not fall in the regime of the theorem are also discussed. The models are discussed in the context of recent cosmological observations and viability issues.
arXiv comment13 pages, 10 figures, references added
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