Speaker
Description
Along with the accumulated cosmological observations, the standard paradigm of modern cosmology has been verified with high precision. Some new challenges such as the $H_0$ tension also appear. To address these issues, we reconstruct the cosmological evolution in a model-independent manner with the help of Gaussian process using the combined observational data. We extract the reconstructed dark-energy equation-of-state parameter, showing that it exhibits dynamic evolution. We investigate under what situation this type of evolution could be achieved from the perspectives of modified gravity. In particular, we reconstruct the corresponding actions for f(T) modified gravity. Since the reconstruction procedure is completely model-independent, the obtained data-driven reconstructed f(T) form could release the tensions between ÎCDM estimations and local measurements.
