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

TL;DR

This paper investigates how scalar fields produced after inflation affect the reheating temperature, the number of inflationary e-foldings, and the early universe's cosmology before Big Bang Nucleosynthesis.

Contribution

It provides new constraints on reheating temperature considering scalar fields and explores their impact on inflationary parameters and early universe evolution.

Findings

Reheating temperature bounds are affected by scalar field dynamics.

Scalar fields influence the inflationary e-folding calculations.

The study highlights the importance of non-standard scalar phases in pre-BBN cosmology.

Abstract

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.