Martins, Jessica S. [UNESP]Piattella, Oliver F.Shapiro, Ilya L.Starobinsky, Alexei A.2022-11-302022-11-302022-09-01Gravitation & Cosmology. New York: Maik Nauka/interperiodica/springer, v. 28, n. 3, p. 217-227, 2022.0202-2893http://hdl.handle.net/11449/237843In a recent paper by V. Barra et al. [3] it was shown that the consistency of the quantum theory of a sterile scalar coupled to massive fermions requires inclusion of odd-power terms in the potential of scalar self-interaction. One of the most important examples of a sterile scalar is the inflaton, which is typically a real scalar field that does not belong to representations of particle physics gauge groups, such as SU (2). Here we explore the effects of odd-power terms in the inflation potential on main observables, such as the scalar spectral index n(s) and the tensor-to-scalar ratio r, in the case of the inflaton's strong non-minimal coupling to gravity.217-227engArtigo10.1134/S0202289322030057WOS:000850587400001