2013/12/31 by Paolo Creminelli, Jérôme Gleyzes, Lam Hui +2 · 2 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Consistency (knowledge bases) #Cosmology and Gravitation Theories #Equivalence (formal languages) #Equivalence relation #Galaxies: Formation, Evolution, Phenomena #Limit (mathematics) #Scale (ratio) #Set (abstract data type) #Space (punctuation) #Weak equivalence #astro-ph.CO #gr-qc #hep-th
paper · pdf · doi:10.1088/1475-7516/2014/06/009
16 pages, 1 figure. v2: minor changes, JCAP published version
openalex publication_date 2014/06/06 · arxiv created 2014/07/15 · arxiv updated 2014/07/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The recently derived consistency relations for Large Scale Structure do not hold if the Equivalence Principle (EP) is violated. We show it explicitly in a toy model with two fluids, one of which is coupled to a fifth force. We explore the constraints that galaxy surveys can set on EP violation looking at the squeezed limit of the 3-point function involving two populations of objects. We find that one can explore EP violations of order 10 −3 ÷10 −4 on cosmological scales. Chameleon models are already very constrained by the requirement of screening within the Solar System and only a very tiny region of the parameter space can be explored with this method. We show that no violation of the consistency relations is expected in Galileon models.