TY - JOUR
T1 - The scale factor potential approach to inflation
AU - Benisty, David
AU - Guendelman, Eduardo I.
AU - Saridakis, Emmanuel N.
N1 - Publisher Copyright:
© 2020, The Author(s).
PY - 2020/5/1
Y1 - 2020/5/1
N2 - We propose a new approach to investigate inflation in a model-independent way, and in particular to elaborate the involved observables, through the introduction of the “scale factor potential”. Through its use one can immediately determine the inflation end, which corresponds to its first (and global) minimum. Additionally, we express the inflationary observables in terms of its logarithm, using as independent variable the e-folding number. As an example, we construct a new class of scalar potentials that can lead to the desired spectral index and tensor-to-scalar ratio, namely ns≈ 0.965 and r∼ 10 - 4 for 60 e-folds, in agreement with observations.
AB - We propose a new approach to investigate inflation in a model-independent way, and in particular to elaborate the involved observables, through the introduction of the “scale factor potential”. Through its use one can immediately determine the inflation end, which corresponds to its first (and global) minimum. Additionally, we express the inflationary observables in terms of its logarithm, using as independent variable the e-folding number. As an example, we construct a new class of scalar potentials that can lead to the desired spectral index and tensor-to-scalar ratio, namely ns≈ 0.965 and r∼ 10 - 4 for 60 e-folds, in agreement with observations.
UR - https://www.scopus.com/pages/publications/85085617127
U2 - 10.1140/epjc/s10052-020-8054-z
DO - 10.1140/epjc/s10052-020-8054-z
M3 - Article
AN - SCOPUS:85085617127
SN - 1434-6044
VL - 80
JO - European Physical Journal C
JF - European Physical Journal C
IS - 5
M1 - 480
ER -