Anisotropic multiple bounce models

Dias Pinto Vitenti, Sandro;et.al.
(2017) Physical Review D, Particles, Fields, Gravitation and Cosmology — Vol. 96, p. 23517 (2017)

Files

170504602.pdf
  • Open Access
  • Adobe PDF
  • 795.85 KB
Download

Details

Authors
  • Dias Pinto Vitenti, SandroUCLouvain
    Author
  • et. al.
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.
Affiliations

Citations

  • APA
  • Chicago
  • FWB

Dias Pinto Vitenti, S., & et al. (2017). Anisotropic multiple bounce models. Physical Review D, Particles, Fields, Gravitation and Cosmology, 96, 23517. https://doi.org/10.1103/PhysRevD.96.023517 (Original work published 2017)