Details

Autor(en) / Beteiligte

• Martins, Jéssica S.
• Piattella, Oliver F.
• Shapiro, Ilya L.
• Starobinsky, Alexei A.

Titel

Inflation with Sterile Scalar Coupled to Massive Fermions and to Gravity

Ist Teil von

• Gravitation & cosmology, 2022-09, Vol.28 (3), p.217-227

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2022

Quelle

SpringerNature Journals

Beschreibungen/Notizen

• In 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 . Here we explore the effects of odd-power terms in the inflation potential on main observables, such as the scalar spectral index and the tensor-to-scalar ratio , in the case of the inflaton’s strong non-minimal coupling to gravity.