Pre-Inflationary Bounce Effects on Primordial Gravitational Waves of $f(R)$ Gravity
S. D. Odintsov,
V. K. Oikonomou
Abstract:In this work we shall study a possible pre-inflationary scenario for our Universe and how this might be realized by f (R) gravity. Specifically, we shall introduce a scenario in which the Universe in the pre-inflationary era contracts until it reaches a minimum magnitude, and subsequently expands, slowly entering a slow-roll quasi-de Sitter inflationary era. This pre-inflationary bounce avoids the cosmic singularity, and for the eras before and after the quasi-de Sitter inflationary stage, approximately satisf… Show more
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