Standard Model (Cosmology)

Standard Model (Cosmology)

Updated: October 22, 2020
Physics Cosmology

This refers to the Cosmological “Standard Model”, i.e. the ΛCDM. This is not the same as the Standard Model of Particle Physics

Lambda-CDM #

The lambda-cdm or, lambda cold-dark-matter, is a three-parameter description of the Big Bang Cosmological model parametrized by:

  1. the Cosmological Constant Λ
  2. dark matter
  3. normal matter

Of the cosmological models, this presents the simplest one in terms of describing the universe as we see it observationally. Specifically, it succintly explains:

  1. the CMB (Cosmic Microwave Background)
  2. galaxy distribution
  3. the abundancies of H, He, and Li
  4. accelerated expansion