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Quasimatter domination parameters in bouncing cosmologies

Author
Elizalde, E.; Haro, J.; Odintsov, S.
Type of activity
Journal article
Journal
Physical review D. Particles, fields, gravitation and cosmology
Date of publication
2015-03-19
Volume
91
Number
6
First page
063522-1
Last page
063522-9
DOI
https://doi.org/10.1103/PhysRevD.91.063522 Open in new window
Project funding
Ecuaciones en derivadas parciales: problemas de reacción-difusión y problemas geométricos
URL
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.063522 Open in new window
Abstract
A fine set of parameters is introduced for bouncing cosmologies in order to describe the nearly matterdominated phase, and which play the same role that the usual slow-roll parameters play in inflationary cosmology. It is shown that, as in the inflation case, the spectral index and the running parameter for scalar perturbations in bouncing cosmologies can be best expressed in terms of these small parameters. Further, they explicitly exhibit the duality that exists between a nearly matter-dominat...
Keywords
constraints, generalized gravity, inflationary universe, models, natural inflation, perturbations, probe wmap observations, scalar field
Group of research
EDP - Partial Differential Equations and Applications

Participants

  • Elizalde Rius, Emilio  (author)
  • Haro Cases, Jaime  (author)
  • Odintsov, Sergei D.  (author)