Large scale structures and the cubic galileon model
Sourav Bhattacharya, Konstantinos F. Dialektopoulos, Theodore N., Tomaras
TL;DR
This paper calculates the maximum size of cosmic structures within the cubic galileon model and uses observational data to constrain the model's matter-galileon coupling, improving previous bounds.
Contribution
It introduces a perturbative method to relate cosmic structure sizes to the cubic galileon model and derives new observational constraints on the model's parameters.
Findings
Constrained matter-galileon coupling to 0.033–0.17
Improved bounds over solar system tests
Perturbative approach to structure size in galileon models
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 , thus improving previous bounds based solely on solar system physics.
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