Quintom cosmology from an effective $BF$ theory
| Autor: | Escobedo, Ricardo, Santos-Silva, Roberto, Hernández-Jiménez, Rafael, Moreno, Claudia |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | In this article we analyze an effective action derived from a 7-dimensional $BF$ theory that, upon dimensional reduction, it transforms into an effective 4-dimensional action. Such resulting effective action involves a generic metric; however, we study a cosmological model described by a de Sitter universe, with a Hubble constant $H_{0}=67.70 \,\rm [km\, s^{-1}\,Mpc^{-1}]$. We compute the barotropic parameter $\omega \equiv p/\rho$ to analyze our solutions. Three different upshots are presented, where this model can transit from quintessence to the phantom regimes, crossing the theoretical phantom divide line. Thus the effective $BF$ action represents a quintom scenario. Comment: 13 pages, 3 figures |
| Databáze: | arXiv |
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