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Inflation and dark energy from $f(R)$ gravity

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arxiv 1510.04864 v1 pith:XO4GYC6Z submitted 2015-10-16 hep-th gr-qc

classification hep-thgr-qc
keywords inflationenergyalphabeendarketernalmodelsavoid
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Inflationary paradigm has several issues, such as the pre-inflationary horizon problem or the eternal inflation. To avoid that the standard Starobinsky inflation has been extended to $R + \alpha R^n$ and $R + \alpha R^n -\delta R^{2-n}$ models as well as Brans-Dicke generalisation of those $f(R)$ models. The region of the parameter space, which provides consistency with PLANCK data and lack of eternal inflation has been founded. The Einstein frame potential has a stable minimum with non-zero vacuum energy, which may be a source of dark energy.

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Cited by 1 Pith paper

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