Observational constraints on Galileon cosmology
Observational constraints on Galileon cosmology
We study the cosmology of a covariant Galileon field $\ensuremath{\phi}$ with five covariant Lagrangians and confront this theory with the most recent cosmological probes: the type Ia supernovae data (Constitution and Union2 sets), cosmic microwave background (WMAP7), and the baryon acoustic oscillations (SDSS7). In the Galileon cosmology with a late-time …