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2012

Generating matter inhomogeneities in general relativity

Coley, Alan, Lim, Woei Chet

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In this Letter we discuss a natural general relativistic mechanism that causes inhomogeneities and hence generates matter perturbations in the early universe.

We concentrate on spikes, both incomplete spikes and recurring spikes, that naturally occur in the initial oscillatory regime of general cosmological models.
In particular, we explicitly show that spikes occurring in a class of G_2 models lead to inhomogeneities that, due to gravitational instability, leave small residual imprints on matter in the form of matter perturbations.
The residual matter overdensities from recurring spikes are not local but form on surfaces.

Generating matter inhomogeneities in general relativity · Around

Built on

E. M. Lifshitz and I. M. Khalatnikov, Adv. Phys. 12
1982
Earlier work this paper cites.
W. C. Lim, Ph.D. thesis, University of Waterloo (2004), gr-qc/0410126
2004
Earlier work this paper cites.
B. K. Berger, J. Isenberg, and M. Weaver, Phys. Rev. D 64
2005
Earlier work this paper cites.

Similar

J. Wei, in Handbook of differential equations, Vol. 5
2008
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W. C. Lim, Class. Quantum Grav. 25
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W. C. Lim et al
2009
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R. Brandenberger, ‘Inflationary Cosmology: Progress and Problems’, hep-ph/9910410; see also hep-ph/0101119
Cited in the paper.

Then

V. Mukhanov, H. Feldman and R. Brandenberger, Phys. Rep. 215
2009
Later among the works it cites.
P.J.E. Peebles, L. A. Page and R. B. Partridge, ‘Finding the Big Bang’ (Cambridge University Press, Cambridge, 2009); P. J. E. Peebles arXiv:0910.5142
Original
2009
Later among the works it cites.

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