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Relativity in Modern Physics$
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Nathalie Deruelle and Jean-Philippe Uzan

Print publication date: 2018

Print ISBN-13: 9780198786399

Published to Oxford Scholarship Online: October 2018

DOI: 10.1093/oso/9780198786399.001.0001

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The Lambda-CDM model of the hot Big Bang

The Lambda-CDM model of the hot Big Bang

(p.605) 19 The Lambda-CDM model of the hot Big Bang
Relativity in Modern Physics

Nathalie Deruelle

Jean-Philippe Uzan

Oxford University Press

This chapter introduces the Lambda-CDM (cold dark matter) model. In 1948, under the impetus of George Gamow, Robert Hermann, Ralph Alpher, and Hans Bethe in particular, relativistic cosmology entered the second phase of its history. In this phase, physical processes, in particular, nuclear and atomic processes, are taken into account. This provides two observational tests of the model: primordial nucleosynthesis, which explains the origin of light nuclei, and the existence of the cosmic microwave background, and it establishes the fact that the universe has a thermal history. Study of the large-scale structure of the universe then indicates the existence of dark matter and a nonzero cosmological constant. This model, known as the Λ‎CDM model, is the standard model of contemporary cosmology.

Keywords:   Lambda-CDM model, physical processes, primordial nucleosynthesis, cosmic microwave background, thermal history, universe, Λ‎CDM model, contemporary cosmology, hot Big Bang model

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