19 citations · 56 across the 7 of their papers we have counts for
7 papers
Probing the era of reheating for reconstructed inflationary potential in the RS II braneworld
Sukannya Bhattacharya, Kumar Das, Mayukh R. Gangopadhyay
We analyse the epoch of reheating after an inflationary phase in the Randal Sundrum(RS) Type- braneworld, where we did not consider any particular model of inflation, but r…
Even parity potential for spacetimes with Gaussian matter source and its associated QNM spectra
Souvik Pramanik, Kumar Das
We have obtained the general form of even mode potential function for the gravitational perturbation of a static spherically symmetric spacetime. Considering the minimal-spread Gau…
Quasinormal mode spectra for odd parity perturbations in spacetimes with smeared matter sources
Kumar Das, Souvik Pramanik, Subir Ghosh
We have found the Quasi Normal Mode (QNM) frequencies of a class of static spherically symmetric spacetimes having a {\it {smeared}} matter distribution, parameterized by - an…
Attractor Models in Scalar-Tensor Theories of Inflation
Sukannya Bhattacharya, Kumar Das, Koushik Dutta
In this work we study the cosmological attractor models of inflation in connection with certain scalar-tensor theories of gravity, e.g gravity and Brans-Dicke theory. For so…
Supergravity Contributions to Inflation in models with non-minimal coupling to gravity
Kumar Das, Valerie Domcke, Koushik Dutta
This paper provides a systematic study of supergravity contributions relevant for inflationary model building in Jordan frame supergravity. In this framework, canonical kinetic ter…
Inflationary Predictions and Moduli Masses
Kumar Das, Koushik Dutta, Anshuman Maharana
A generic feature of inflationary models in supergravity/string constructions is vacuum misalignment for the moduli fields. The associated production of moduli particles leads to a…