57 citations · 152 across the 6 of their papers we have counts for
6 papers
Cosmological perturbation of Unimodular Gravity and General Relativity are identical
Abhishek Basak, Ophélia Fabre, S. Shankaranarayanan
Unimodular Gravity (UG) is a restricted version of General Relativity (GR) in which the determinant of the metric is a fixed function and the field equations are given by the trace…
Super-inflation and generation of first order vector perturbations in ELKO
Abhishek Basak, S. Shankaranarayanan
In this work we construct a model where the first order vector perturbations can be generated during inflationary expansion. For the non-standard spinors, known as ELKO, we show th…
Attractor behaviour in ELKO cosmology
Abhishek Basak, Jitesh R. Bhatt, S. Shankaranarayanan +1
We study the dynamics of ELKO in the context of accelerated phase of our universe. To avoid the fine tuning problem associated with the initial conditions, it is required that the…
A note on inflationary scenario with non-minimal coupling
Abhishek Basak, Jitesh R. Bhatt
We consider first order perturbation theory for a non-minimally coupled inflaton field without assuming an adiabatic equation of state. In general perturbations in non-minimally co…
Relation Between Two Approaches of the Colour Hydrodynamics
Abhishek Basak, Jitesh R. Bhatt, Predhiman K. Kaw
It is argued that the short time scale phenomena can be studied within the framework of hydrodynamics in the quark-gluon plasma. There are two different versions of the hydrodynami…
Lorentz invariant dark-spinor and inflation
Abhishek Basak, Jitesh R. Bhatt
We investigate the possibility of the inflation driven by a Lorentz invariant non-standard spinor field. As these spinors are having dominant interaction via gravitational field on…