Stability of a viable non-minimal bounce

Abstract

The main difficulties in constructing a viable early Universe bouncing model are: to bypass the observational and theoretical \emph{no-go} theorem, to construct a stable non-singular bouncing phase and perhaps, the major concern of it is to construct a stable attractor solution which can evade the BKL instability as well. In this article, in the homogeneous and isotropic background, we extensively study the stability analysis of the recently announced viable non-minimal bouncing theory in the presence of an additional barotropic fluid and show that, the bouncing solution remains stable and can evade BKL instability for a wide range of the model parameter. We provide the expressions that explain the behavior of the Universe in the vicinity of the required fixed point i.e., the bouncing solution and compare our results with the minimal theory and show that ekpyrosis is the most stable solution in any scenario.

23 pages, 1 figure, new references added, published in a special issue 'Bounce Cosmology' in the journal Universe

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Cited by in corpus (8)

• Scalar and Tensor Perturbations in DHOST Bounce Cosmology
• Pulsar timing array observations as possible hints for nonsingular cosmology
• Microphysical manifestations of viscosity and consequences for anisotropies in the very early universe
• Generating cosmological perturbations in non-singular Horndeski cosmologies
• Inflationary magnetogenesis: solving the strong coupling and its non-Gaussian signatures
• Universe bouncing its way to inflation
• Unifying inflationary and reheating solution
• Gravitational Waves from Primordial Black Holes formed by Null Energy Condition Violation during Inflation