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gr-qc2021★ 68 cited
Analytic extensions of Starobinsky model of inflation
Vsevolod R. Ivanov, Sergei V. Ketov, Ekaterina O. Pozdeeva +1
We study several extensions of the Starobinsky model of inflation, which obey all observational constraints on the inflationary parameters, by demanding that both the inflaton scal…
gr-qc2021★ 17 cited
Integrable modified gravity cosmological models with an additional scalar field
Vsevolod R. Ivanov, Sergey Yu. Vernov
We consider modified gravity cosmological models that can be transformed into two-field chiral cosmological models by the conformal metric transformation. For the gravity mod…