Evaluating backreaction with the peak model of structure formation

Rasanen, Syksy

doi:10.1088/1475-7516/2008/04/026

Scientific article

English

Evaluating backreaction with the peak model of structure formation

Contributors

Rasanen, Syksy

Published in

Journal of cosmology and astroparticle physics, vol. 04, no. 026, 45

Publication date

2008

Abstract

We evaluate the average expansion rate of a universe which contains a realistic evolving ensemble of non-linear structures. We use the peak model of structure formation to obtain the number density of structures, and take the individual structures to be spherical. The expansion rate increases relative to the FRW value on a timescale of 10-100 billion years, because the universe becomes dominated by fast-expanding voids. However, the increase is not rapid enough to correspond to acceleration. We discuss how to improve our treatment. We also consider various qualitative issues related to backreaction.

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique théorique

Citation (ISO format)

RASANEN, Syksy. Evaluating backreaction with the peak model of structure formation. In: Journal of cosmology and astroparticle physics, 2008, vol. 04, n° 026, p. 45. doi: 10.1088/1475-7516/2008/04/026

Article (Accepted version)

Identifiers

PID : unige:2565
DOI : 10.1088/1475-7516/2008/04/026

Journal ISSN

1475-7516

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Creation

28/08/2009 13:38:00

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28/08/2009 13:38:00

Update

14/03/2023 15:11:09

Status update

14/03/2023 15:11:09

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29/10/2024 11:56:52

Evaluating backreaction with the peak model of structure formation

Contributors

Published in

Publication date

Abstract

UNIGE affiliation entities

Citation (ISO format)

Main files (1)

Identifiers

Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation