Backreaction Issues in Relativistic Cosmology and the Dark Energy Debate - INSPIRE

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Backreaction Issues in Relativistic Cosmology and the Dark Energy Debate

Thomas Buchert
(
- Munich U., ASC and
- Cape Town U., Dept. Math.
)

Dec, 2006

16 pages

Part of Proceedings, 12th Brazilian School of Cosmology and gravitation (BSCG 2006) : Mangaratiba, Brazil, September 10-23, 2006, 361-380

Published in:

AIP Conf.Proc. 910 (2007) 1, 361-380

Contribution to:

- BSCG 2006
, 361-380

Published: Jun 20, 2007

e-Print:

gr-qc/0612166 [gr-qc]

DOI:

10.1063/1.2752486

View in:

ADS Abstract Service

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Abstract: (AIP)

The effective evolution of an inhomogeneous universe model in Einstein’s theory of gravitation may be described in terms of spatially averaged scalar variables. This evolution can be modeled by solutions of a set of Friedmann equations for an effective scale factor, with matter and backreaction source terms, where the latter can be represented by a minimally coupled scalar field (‘morphon field’). We review the basic steps of a description of backreaction effects in relativistic cosmology that lead to refurnishing the standard cosmological equations, but also lay down a number of unresolved issues in connection with their interpretation within observational cosmology.

98.80.Jk
95.36.+x
04.20.Cv
cosmology
dark matter
Einstein field equations
lectures: Rio de Janeiro 2006/09/10
cosmological model
back reaction
dark energy

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