2021/05/14 by Francisco X. Linares Cedeño, Nandan Roy, Cedeño, Francisco X. Linares +3 · 1 citation
Physics and Astronomy · Economics, Econometrics and Finance · Social Sciences · #Cosmology and Gravitation Theories #Stochastic processes and financial applications #Insurance, Mortality, Demography, Risk Management
paper · pdf · doi:10.48550/arxiv.2105.07103
In this work, we study tracker phantom dark energy models with a general\nparameterization of the scalar potentials. Our analysis also considers the\nscenario of having both phantom field and the cosmological constant as the dark\nenergy components. A detailed statistical analysis with current cosmological\nobservations shows an increase in the value of the Hubble parameter due to the\npresence of phantom dark energy but it can not alleviate the Hubble tension\ncompletely. Our results using Bayesian methods suggests a decisive evidence in\nfavor of a phantom field over a positive cosmological constant, although the\npossibility of a negative cosmological constant cannot be ruled out hidden in\nthe dark sector.\n