Abstract
The inflationary model in which the Universe passes through an exponentially expanding phase can explain a few cosmological conundrums of the standard big-bang model. It is therefore interesting to study the stability of this model. It has been demonstrated that the inflationary scenario is stable with respect to density, velocity and gravitational wave perturbations1–3. Here I show that the new inflationary model is compatible with large initial anisotropy. The initial anisotropic energy density could be many orders of magnitude larger than the initial radiation energy density.
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References
Frieman, J. A. & Will, C. M. Astrophys. J. 259, 437–441 (1982).
Barrow, J. D. in The Very Early Universe (eds Gibbons, G., Hawking, S. & Siklos, S.) (Cambridge University Press, 1983).
Boucher, P. & Gibbons, G. in The Very Early Universe (eds Gibbons, G., Hawking, S. & Siklos, S.) (Cambridge University Press, 1983).
Guth, A. H. Phys. Rev. D23, 347–356 (1981).
Linde, A. D. Phys. Lett. 108 B, 389–395 (1982).
Albrecht, A. & Steinhardt, P. J. Phys. Rev. Lett. 48, 1220–1223 (1982).
Guth, A. H. in The Very Early Universe (eds Gibbons, G., Hawking, S. & Siklos, S.) (Cambridge University Press, 1983).
Hawking, S. & Moss, I. G. Phys. Lett. 110 B, 35–38 (1982).
Barrow, J. D. & Turner, M. S. Nature 292, 35–38 (1982).
Futamase, T. Coleman-Weinberg Breaking in an Anisotropic Space-time (Preprint, University College Cardiff, 1983).
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Demianski, M. Large anisotropy in the Universe does not prevent inflation. Nature 307, 140–141 (1984). https://doi.org/10.1038/307140a0
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DOI: https://doi.org/10.1038/307140a0
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