CosmoVerse Journal Club: Anna Chiara Alfano скачать в хорошем качестве

CosmoVerse Journal Club: Anna Chiara Alfano

Investigating cosmic distance duality and dark energy evolution through intermediate and high-z probes Deviations from the cosmic distance duality (CDD) relation may result from systematic errors in distance measurements or hint at new physics. Furthermore, it can be linked to the Hubble constant tension as a cosmic calibration tension emerging when luminosity and angular-diameter distances are compared. Based on this, we adopt two treatments to investigate possible departures from the CDD relation: model-dependent and -independent approaches mapping both low and intermediate/high redshift epochs. In the first we consider as background cosmological models first the ΛCDM and then the ω0ω1CDM scenarios to assess how deviations from the CDD relation affect the cosmological parameters while the latter focus on adopting the parameterization of the Hubble rate via Bézier polynomials. We seek possible departures from the relation considering i) a Taylor expansion, ii) a power-law parameterization, iii) a logarithmic correction, iv) a Padé parameterization and v) a second order Chebyshev parameterization. Additionally, when adopting the model-dependent treatment we also assess the statistically favored cosmological model through model selection criteria. Register to listen live to our next Journal Club: https://cosmoversetensions.eu/for-sci... Visit our website: https://cosmoversetensions.eu Like our socials: Twitter:   / cacosmoverse   Linked-in:   / cacosmoverse   Facebook:   / cacosmoverse