2022/03/08 by J. Sadeghi, Saeed Noori Gashti, Sadeghi, J. +3
Physics and Astronomy · #Black Holes and Theoretical Physics #Brans-Dicke cosmology #Complex quintessence #Cosmology and Gravitation Theories #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #General Relativity and Quantum Cosmology (gr-qc) #Holographic dark energy #Interacting #Kaniadakis #Non-interacting #Tsallis
paper · pdf · doi:10.48550/arxiv.2203.04375
openalex publication_date 2022/03/08 · openalex created_date 2022/04/03 · openalex updated_date 2026/07/28
In this paper, by considering the complex form of the quintessence model, we study two different dynamic structures of holographic dark energy as Tsallis and Kaniadakis in the framework Brans-Dicke cosmology. In each setup, we employ non-interacting and interacting cases and calculate some cosmological parameters such as the equation of state ω. We also discuss the ω- ω' behavior. By modifying the potential and studying the scalar field dynamics, we examine the complex quintessence cosmology. In addition, considering the two parts of the quintessence field effects, i.e., real and complex, and considering the fractional energy density ΩD , we examine whether it can describe a real universe or not. We also specify that the fractional energy density can not be arbitrary between 0 and 1. In other words, it depends on the Tsallis, Kaniadakis, and Brans-Dicke cosmology free parameters. We create a relationship between the fractional energy density and other parameters introduced in the text such as δ, b2, α and β for each model separately. Finally, we compare the obtained results of models to each other and the latest observable data.