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arXiv · 2012.06869

Lagrangian formulation for an extended cosmological equation-of-state

Grigoris Panotopoulos·Ilidio Lopes·Angel Rincon
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Abstract

We show that the extended cosmological equation-of-state developed starting from a Chaplygin equation-of-state, recently applied to stellar modeling, is a viable dark energy model consistent with standard scalar potentials. Moreover we find a Lagrangian formulation based on a canonical scalar field with the appropriate self-interaction potential. Finally, we fit the scalar potential obtained numerically with concrete functions well studied in the literature. Our results may be of interest to model builders and particle physicists.

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BibTeXRIS

Grigoris Panotopoulos, Ilidio Lopes, Angel Rincon. 2020-12-12. Lagrangian formulation for an extended cosmological equation-of-state. https://doi.org/10.1016/j.dark.2020.100751

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