Potential reconstruction from general power spectrum in single-field inflation

Choi, Ki‐Young; Gong, Jinn‐Ouk; Kang, Subeom; Raveendran, Rathul Nath

doi:10.1088/1475-7516/2022/01/012

Cited by 2 publications

(2 citation statements)

References 35 publications

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“…Thus, such an approach differs significantly from the reconstruction procedure of the scalar field potential from the parameters of cosmological perturbations in the framework of GR [14,15] or from the reconstruction of modified gravity theories from the universe expansion history [3,4], which also imply different inflationary scenarios.…”

Section: Discussionmentioning

confidence: 99%

“…Considering GR scalar field cosmology in the early universe, we accept that observational constraints on the parameters of cosmological perturbation values due to anisotropy a e-mail: ingvor@inbox.ru (corresponding author) b e-mail: chervon.sergey@gmail.com c e-mail: amor59@mail.ru d e-mail: iliyagol@mail.ru and polarization of the cosmic microwave background (CMB) [12,13] are directly connected with the shape of the scalar field potential [14,15]. It is possible to select a certain class of the scalar field potentials corresponding to inflationary models and satisfying observational constraints in GR scalar field cosmology.…”

Section: Introductionmentioning

confidence: 99%

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Relic gravitational waves in verified inflationary models based on the generalized scalar–tensor gravity

et al. 2022

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In this work, we consider the models of cosmological inflation based on generalized scalar–tensor theories of gravity with quadratic connection between the Hubble parameter and coupling function. For such a class of the models, we discuss the correspondence between well-known versions of the scalar–tensor gravity theories and physically motivated potentials of a scalar field. It is shown that this class of models corresponds to the Planck observational constraints on the cosmological perturbation parameters for an arbitrary potential of a scalar field and arbitrary version of a scalar–tensor gravity theory. The spectrum of relict gravitational waves is analyzed, and the frequency range corresponding to maximal energy density is determined. The possibility of direct detection of the relic gravitational waves, predicted in such a class of models, by satellite and ground-based detectors is discussed as well.

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