151 citations · 396 across the 7 of their papers we have counts for
7 papers
Generic f(R) theories and classicality of their scalarons
R. Gannouji, M. Sami, I. Thongkool
We study quantum stability bound on the mass of scalaron in generic theories of gravity. We show that in these scenarios, the scalaron mass increases faster with local densi…
How delicate are the gravity models with disappearing cosmological constant?
I. Thongkool, M. Sami, S. Rai Choudhury
We consider stability of spherically symmetric solutions in gravity model proposed by Starobinsky. We find that the model suffers from a severe fine tuning problem when appl…
Constraining gravity models with disappearing cosmological constant
I. Thongkool, M. Sami, R. Gannouji +1
The gravity models proposed by Hu-Sawicki and Starobinsky are generic for local gravity constraints to be evaded. The large deviations from these models either result into v…
Reheating the D-brane universe via instant preheating
Sudhakar Panda, M. Sami, I. Thongkool
We investigate a possibility of reheating in a scenario of D-brane inflation in a warped deformed conifold background which includes perturbative corrections to throat geometry sou…
Delicate f(R) gravity models with disappearing cosmological constant and observational constraints on the model parameters
Abha Dev, D. Jain, S. Jhingan +3
We study the theory of gravity using metric approach. In particular we investigate the recently proposed model by Hu-Sawicki, Appleby Battye and Starobinsky. In this mod…
Phantom and non-phantom dark energy: The cosmological relevance of non-locally corrected gravity
S. Jhingan, S. Nojiri, S. D. Odintsov +3
In this paper we have investigated the cosmological dynamics of non-locally corrected gravity involving a function of the inverse d'Alembertian of the Ricci scalar, $f(\Box^{-1} R)…