A quasi-matter bounce equivalent to Starobinsky inflation

Autor:	Guimarães, L. F., Falciano, F. T., Brando, G.
Rok vydání:	2019
Předmět:	General Relativity and Quantum Cosmology High Energy Physics - Theory
Zdroj:	Phys. Rev. D 99, 103515 (2019)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.99.103515
Popis:	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 $n_s-1$ and the tensor-to-scalar ratio $r$. Comment: 12 pages, 2 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1902.05031 Zobrazit plný text záznamu View this record from Arxiv