On Inflationary Scale, Reheating Scale and Pre-BBN Cosmology with Scalar Fields

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In this paper, we discuss the constraints on the reheating temperature supposing an early post-reheating cosmological phase dominated by one or more simple scalar fields produced from inflaton decay and decoupled from matter and radiation.

• In addition, we explore the combined effects of the reheating and non-standard scalar field phases on the inflationary number of $e$-foldings.