39 citations · 135 across the 8 of their papers we have counts for
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The f(R) Gravity Function of the Linde Quintessence
Sergei V. Ketov, Natsuki Watanabe
We calculate the f(R) gravity function in the dual gravity description of the quintessence model with a quadratic (Linde) scalar potential and a positive cosmological constant. We…
On the Higgs-like Quintessence for Dark Energy
Sergei V. Ketov, N. Watanabe
We propose a dynamical (quintessence) model of dark energy in the current universe with a renormalizable (Higgs-like) scalar potential. We prove the viability of our model (after f…
Dark Energy in Modified Supergravity
Sergei V. Ketov, Natsuki Watanabe
We propose a supersymmetric extension of the dynamical dark energy function and the corresponding scalar (super)potential in F(R) supergravity. Our model is viable in the Einstein…
Cosmological constant in F(R) supergravity
Sergei V. Ketov, Natsuki Watanabe
A cosmological constant in the regime of low space-time curvature is calculated in the recently proposed version of F(R) supergravity with a generic cubic function F. The F(R) supe…
Cosmological properties of a generic (\cal R)^2-supergravity
Sergei V. Ketov, Natsuki Watanabe
We investigate in detail the structure of the simplest non-trivial F(\cal R)-supergravity model, whose F-function is given by a generic quadratic polynomial in terms of the scalar…
Slow-roll inflation in (R+R*4) gravity
S. Kaneda, S. V. Ketov, N. Watanabe
We reconsider the toy-model of topological inflation, based on the R*4-modified gravity. By using its equivalence to the certain scalar-tensor gravity model in four space-time dime…