Scale invariant theory and dark matter, observational tests in cosmology and galactic physics
Intervenant : André Maeder
Université de Genève
Basics of the scale invariant theory are briefly presented. A dozen of tests in cosmology and galaxy physics are already performed. No dark matter appears necessary to account for the high rotation of galaxies and for the high velocity dispersion in clusters of galaxies. A remarkable relation between the centripetal acceleration of galaxies and their baryon gravity has been found by Lelli et al. (2017). At low gravities, it shows large deviations from the 1:1 line. These deviations are correctly described in the scale invariant context. First results on the growth of the density fluctuations are also shown.