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dc.contributor.authorClarkson, Cen_US
dc.contributor.authorClifton, Ten_US
dc.contributor.authorFebruary, Sen_US
dc.date.accessioned2016-11-24T10:47:33Z
dc.date.submitted2016-11-07T16:44:59.268Z
dc.identifier.urihttp://qmro.qmul.ac.uk/xmlui/handle/123456789/17865
dc.description15 pages, no figures
dc.description15 pages, no figuresen_US
dc.description15 pages, no figuresen_US
dc.description.abstractThe Lemaitre-Tolman-Bondi solution has received much attention as a possible alternative to Dark Energy, as it is able to account for the apparent acceleration of the Universe without any exotic matter content. However, in order to make rigorous comparisons between these models and cosmological observations, such as the integrated Sachs-Wolfe effect, baryon acoustic oscillations and the observed matter power spectrum, it is absolutely necessary to have a proper understanding of the linear perturbation theory about them. Here we present this theory in a fully general, and gauge-invariant form. It is shown that scalar, vector and tensor perturbations interact, and that the natural gauge invariant variables in Lemaitre-Tolman-Bondi cosmology do not correspond straightforwardly to the usual Bardeen variables, in the limit of spatial homogeneity. We therefore construct new variables that reduce to pure scalar, vector and tensor modes in this limit.en_US
dc.format.extent025 - ?en_US
dc.relation.ispartofJCAPen_US
dc.rightsThis is a pre-copyedited, author-produced PDF of an article accepted for publication in Journal of Cosmology and Astroparticle Physics following peer review. The version of record is available http://iopscience.iop.org/article/10.1088/1475-7516/2009/06/025/meta
dc.subjectastro-ph.COen_US
dc.subjectastro-ph.COen_US
dc.subjectgr-qcen_US
dc.titlePerturbation Theory in Lemaitre-Tolman-Bondi Cosmologyen_US
dc.typeArticle
dc.rights.holder© 2009 IOP Publishing Ltd and SISSA
dc.identifier.doi10.1088/1475-7516/2009/06/025en_US
pubs.author-urlhttp://arxiv.org/abs/0903.5040v2en_US
pubs.notesNo embargoen_US
pubs.publisher-urlhttp://dx.doi.org/10.1088/1475-7516/2009/06/025en_US
pubs.volume06en_US


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