Galaxy clusters, cosmic chronometers and the Einstein equivalence principle

  title={Galaxy clusters, cosmic chronometers and the Einstein equivalence principle},
  author={I.E.C.R. Mendonça and K. Bora and R. F. L. Holanda and Shantanu Desai},
  journal={Journal of Cosmology and Astroparticle Physics},
The Einstein equivalence principle in the electromagnetic sector can be violated in modifications of gravity theory generated by a multiplicative coupling of a scalar field to the electromagnetic Lagrangian. In such theories, deviations of the standard result for the cosmic distance duality relation, and a variation of the fine structure constant are expected and are unequivocally intertwined. In this paper, we search for these possible cosmological signatures by using galaxy cluster gas mass… 
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