Bounce from Inflation

Abstract

We construct a class of viable bouncing models that are conformally related to cosmological inflation. There are three main difficulties in constructing such a model: (i) A stable (attractor) solution, (ii) A non-singular bounce, and (iii) to bypass the no-go theorem that states that simultaneously maintaining the observational bounds on the tensor-to-scalar ratio and the non-Gaussian scalar spectrum are not possible. We show that a non-minimal coupling of the scalar field helps to bypass these difficulties and provides a viable bouncing model with a naturally occurring reheating epoch briefly after the bouncing phase.

5 pages, 3 figures, accepted in Phys. Lett. B

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Cited by in corpus (10)

• Microphysical manifestations of viscosity and consequences for anisotropies in the very early universe
• Helical magnetic fields from Riemann coupling
• Generating cosmological perturbations in non-singular Horndeski cosmologies
• On the strong coupling problem in cosmologies with "strong gravity in the past"
• Stable non-singular cosmologies in beyond Horndeski theory and disformal transformations
• Stability of a viable non-minimal bounce
• Inflationary magnetogenesis: solving the strong coupling and its non-Gaussian signatures
• Jordan and Einstein Frames from the perspective of $\omega =-3/2$ Hamiltonian Brans-Dicke theory
• Unifying inflationary and reheating solution
• Universe bouncing its way to inflation