A quasi-matter bounce equivalent to Starobinsky inflation
arXiv:1902.05031 · doi:10.1103/PhysRevD.99.103515
Abstract
In this paper we construct a bounce model that mimics the Starobinsky inflationary model. Our construction relies on Wands' duality, which shows that the Mukhanov-Sasaki equation has a symmetry transformation by changing appropriately its time-dependent mass term. One of the advantages of this constructive method is that one can control every contribution to the primordial power spectrum and check how far we can emulate a given primordial model with a different scenario. In particular, we show that mapping the Starobinsky inflation into a quasi-matter bounce gives the correct relation between the scalar spectral index and the tensor-to-scalar ratio .
arXiv comment12 pages, 2 figures
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