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We study cosmological consequences of a kinetic gravity braiding model, whichis proposed as an alternative to the dark energy model. The kinetic braidingmodel we study is characterized by a parameter n, which corresponds to theoriginal galileon cosmological model for n=1. We find that the backgroundexpansion of the universe of the kinetic braiding model is the same as theDvali-Turner's model, which reduces to that of the standard cold dark mattermodel with a cosmological constant (LCDM model) for n equal to infinity. Wealso find that the evolution of the linear cosmological perturbation in thekinetic braiding model reduces to that of the LCDM model for n=\infty. Then, wefocus our study on the growth history of the linear density perturbation aswell as the spherical collapse in the nonlinear regime of the densityperturbations, which might be important in order to distinguish between thekinetic braiding model and the LCDM model when n is finite. The theoreticalprediction for the large scale structure is confronted with the multipole powerspectrum of the luminous red galaxy sample of the Sloan Digital Sky survey. Wealso discuss future prospects of constraining the kinetic braiding model usinga future redshift survey like the WFMOS/SuMIRe PFS survey as well as thecluster redshift distribution in the South Pole Telescope survey.

Large Scale Structures in Kinetic Gravity Braiding Model That Can Be Unbraided