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Title: Single-field consistency relations of large scale structure part III: test of the equivalence principle

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{sup −3}÷10{sup −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.
Authors:
 [1] ; ;  [2] ;  [3] ;  [4]
  1. Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, Trieste, 34151 (Italy)
  2. CEA, Institut de Physique Théorique, Gif-sur-Yvette cédex, F-91191 France (France)
  3. Physics Department and Institute for Strings, Cosmology and Astroparticle Physics, Columbia University, New York, NY, 10027 (United States)
  4. SISSA, via Bonomea 265, Trieste, 34136 (Italy)
Publication Date:
OSTI Identifier:
22373527
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 06; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; EQUIVALENCE PRINCIPLE; GALAXIES; SOLAR SYSTEM; SPACE