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Anisotropic multiple bounce models.
- Source :
-
Physical Review D: Particles, Fields, Gravitation & Cosmology . 7/15/2017, Vol. 96 Issue 2, p1-1. 1p. - Publication Year :
- 2017
-
Abstract
- We analyze the Galileon ghost condensate implementation of a bouncing cosmological model in the presence of a non-negligible anisotropic stress. We exhibit its structure, which we find to be far richer than previously thought. In particular, even restricting attention to a single set of underlying microscopic parameters, we obtain, numerically, many qualitatively different regimes: depending on the initial conditions on the scalar field leading the dynamics of the Universe, the contraction phase can evolve directly towards a singularity, avoid it by bouncing once, or even bounce many times before settling into an ever-expanding phase. We clarify the behavior of the anisotropies in these various situations. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ANISOTROPY
*METAPHYSICAL cosmology
*DYNAMICS
Subjects
Details
- Language :
- English
- ISSN :
- 24700010
- Volume :
- 96
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Physical Review D: Particles, Fields, Gravitation & Cosmology
- Publication Type :
- Periodical
- Accession number :
- 124522276
- Full Text :
- https://doi.org/10.1103/PhysRevD.96.023517