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Reheating after f(R) inflation
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abstract
The reheating dynamics after the inflation induced by $R^2$-corrected $f(R)$ model is considered. To avoid the complexity of solving the fourth order equations, we analyze the inflationary and reheating dynamics in the Einstein frame and its analytical solutions are derived. We also perform numerical calculation including the backreaction from the particle creation and compare the results with the analytical solutions. Based on the results, observational constraints on the model are discussed.
Forward citations
Cited by 2 Pith papers
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Gravitational Baryogenesis in $f(R)$ Cosmologies
Gravitational baryogenesis in Starobinsky and Odintsov–Oikonomou f(R) inflation yields η≈(1.05–1.53)×10⁻¹¹ at M*=M_Pl, matching the observed 8.65×10⁻¹¹ only for M*≈0.4 M_Pl.
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Investigating $f(R)$-Inflation: background evolution and constraints
A Jordan-frame f(R) model with particle creation during inflation is fitted to DESI and Pantheon+ data, yielding H0=71.04 and a claimed reduction of the Hubble tension to about 1.6-2.8 sigma.
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