Lyth, David H. and Malik, Karim A. and Sasaki, Misao (2005) A general proof of the conservation of the curvature perturbation. Journal of Cosmology and Astroparticle Physics, 0505. 004. ISSN 1475-7516
Full text not available from this repository.Abstract
Without invoking a perturbative expansion, we define the cosmological curvature perturbation, and consider its behaviour assuming that the universe is smooth over a sufficiently large comoving scale. The equations are simple, resembling closely the first-order equations, and they lead to results which generalize those already proven in linear perturbation theory and (in part) in second-order perturbation theory. In particular, the curvature perturbation is conserved provided that the pressure is a unique function of the energy density.
| Item Type: | Journal Article |
|---|---|
| Journal or Publication Title: | Journal of Cosmology and Astroparticle Physics |
| Additional Information: | This pioneering paper showed that the so-called delta N formalism can be radically generalised, to provide a powerful tool for calculating the non-gaussianity of the primordial perturbation. It has already been used as the starting point for new directions of research by several groups. 78 citations (SPIRES). RAE_import_type : Journal article RAE_uoa_type : Physics |
| Uncontrolled Keywords: | /dk/atira/pure/researchoutput/libraryofcongress/qc |
| Subjects: | |
| Departments: | Faculty of Science and Technology > Physics |
| ID Code: | 2335 |
| Deposited By: | ep_importer |
| Deposited On: | 02 Apr 2008 10:55 |
| Refereed?: | Yes |
| Published?: | Published |
| Last Modified: | 22 Jan 2020 05:53 |
| URI: | https://eprints.lancs.ac.uk/id/eprint/2335 |
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