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The Recombination in a FRW Universe with a Variable Cosmological Term

Published online by Cambridge University Press:  25 May 2016

N. Pires  and
J. A. S. Lima
N. Pires
Affiliation:
Departamento de Física - UFRN, CP 1641, 59072-970 Natal, RN - Brasil
J. A. S. Lima
Affiliation:
Departamento de Física - UFRN, CP 1641, 59072-970 Natal, RN - Brasil

Abstract

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The effects of a time-dependent A term in the recombination epoch are analysed taking into account the main physical processes occurring in the primordial plasma. For a vacuum decaying into photons, we show that the recombination begins when the Universe was smaller and denser, leading to a greater recombination rate. These results may have several implications to the large scale structure. In particular, the earlier recombination means that more time is available to the evolution of density perturbations.

Type
2. Production and Destruction of the Elements
Information
Symposium - International Astronomical Union , Volume 198: The Light Elements and their Evolution , 2000 , pp. 118 - 119
Copyright
Copyright © Astronomical Society of the Pacific 2000 

References

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