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