Lemaitre-Tolman-Bondi model and accelerating expansion

  title={Lemaitre-Tolman-Bondi model and accelerating expansion},
  author={Kari Enqvist}
I discuss the spherically symmetric but inhomogeneous Lemaitre-Tolman-Bondi (LTB) metric, which provides an exact toy model for an inhomogeneous universe. Since we observe light rays from the past light cone, not the expansion of the universe, spatial variation in matter density and Hubble rate can have the same effect on redshift as acceleration in a… CONTINUE READING