Speaker
Hanyu Cheng
Description
This talk will explore deviations from the standard cosmological model across cosmic history. First, I will present data analysis results on dynamical dark energy using a novel pressure parametrization and four parameters parametrization testing by the latest datasets. Second, I will discuss model-independent reconstructions of the reionization history using Gaussian processes. We utilize these reconstructions to place robust bounds on exotic energy injections and decaying particle models.
Author
Co-authors
David Marsh
(King's College London)
Eleonora Di Valentino
(University of Sheffield)
Luca Visinelli
(Università di Salerno & INFN)
Luis Escamilla
(Istanbul Tech. U.)
Mr
Supriya Pan
Ziwen Yin
(Tsung-Dao Lee Inst.)