Amplification of Curvature Perturbations in Cyclic Cosmology
arXiv:1007.2498 · doi:10.1103/PhysRevD.82.123505
Abstract
We analytically and numerically show that through the cycles with nonsingular bounce the amplitude of curvature perturbation on large scale will be amplified and the power spectrum will be redden. In some sense, this amplification will eventually destroy the homogeneity of background, which will lead to the ultimate end of cycles of global universe. We argue that for the model with increasing cycles, it might be possible that a fissiparous multiverse will emerge after one or several cycles, in which the cycles will continue only at corresponding local regions.
5 pages, 4 figures, title changed, Fig.1 revised, discussion and refs. added, to published in PRD
References in corpus (9)
- Non-singular cosmology in a model of non-relativistic gravity
- Oscillating universe with quintom matter
- Inflation with a Negative Cosmological Constant
- The Ups and Downs of Cyclic Universes
- Dark Energy and the Return of the Phoenix Universe
- Spectra of primordial fluctuations in two-perfect-fluid regular bounces
- Processing of Cosmological Perturbations in a Cyclic Cosmology
- Can black holes be torn up by phantom dark energy in cyclic cosmology?
- Cyclic Inflation