Abstract

The maximum size of a bound cosmic structure is computed perturbatively as a function of its mass in the framework of the cubic galileon, proposed recently to model the dark energy of our Universe. Comparison of our results with observations constrains the matter-galileon coupling of the model to 0.033≲α≲0.170.033\lesssim α\lesssim 0.17, thus improving previous bounds based solely on solar system physics.

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