2019/05/31 by Nan Zhang, Ya-Bo Wu, Jia-Nan Chi +2 · 1 citation
Physics and Astronomy · #Cosmological model #Cosmology and Gravitation Theories #Dark energy #Degeneracy (biology) #Energy (signal processing) #Hierarchy #Holography #Noncommutative and Quantum Gravity Theories #Null (SQL) #Statistical Mechanics and Entropy #gr-qc
paper · pdf · doi:10.1142/s0217732320500443
published as Modern Physics Letters A Vol. 33, No. 1 (2020) 2050044 · 10 pages,6 figures
arxiv created 2019/11/24 · arxiv updated 2019/11/26 · openalex publication_date 2019/12/11 · openalex created_date 2020/01/10 · openalex updated_date 2026/07/28
It has been found that the geometrical diagnostic methods can break the degeneracy for dark energy models. In this paper, we investigate the Om diagnostic, the statefinder hierarchy [Formula: see text] and the composite null diagnostic [Formula: see text] for the Tsallis holographic dark energy models with interactions. We find that model parameters and the forms of interaction will influence the values of diagnostic parameters or the trends of the evolutionary trajectories for each model. Moreover, the statefinder hierarchy [Formula: see text] together with [Formula: see text] could give good diagnostic results. Furthermore, we also obtain some issues of cosmological structure by means of the composite null diagnostic.