Testing the concordance model in cosmology with model-independent methods: some issues

Abstract

Since the number of dark energy models have rapidly increased over the last years, some model-independent methods have been developed in order to analyse the cosmological evolution in a phenomenological way. In this manuscript, we analyse some of these approaches and their shortcomings to provide reliable information.

6 pages, 2 figures; Contribution to the proceedings of "The Fourteenth Marcel Grossmann Meeting", University of Rome "La Sapienza", Rome, July 12-18, 2015