Bounce from Inflation. (arXiv:2003.02066v1 [astro-ph.CO])
<a href="http://arxiv.org/find/astro-ph/1/au:+Nandi_D/0/1/0/all/0/1">Debottam Nandi</a>
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
viable bouncing models. We also obtain a naturally occurring reheating epoch
briefly after the bouncing phase.
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
viable bouncing models. We also obtain a naturally occurring reheating epoch
briefly after the bouncing phase.
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