Understand
We explore observational constraints on possible deviations from Newtonian gravity by means of large-scale clustering of galaxies.
- We measure the power spectrum and the bispectrum of Sloan Digital Sky Survey galaxies and compare the result with predictions in an empirical model of modified gravity.
- Our model assumes an additional Yukawa-like term with two parameters that characterize the amplitude and the length scale of the modified gravity.
- The model predictions are calculated using two methods; the second-order perturbation theory and direct N-body simulations.
Reading the bibliography…