44 citations · 72 across the 3 of their papers we have counts for
7 papers
Tracker phantom field and a cosmological constant: dynamics of a composite dark energy model
Francisco X. Linares Cedeño, Nandan Roy, L. Arturo Ureña-López
In this work, we study tracker phantom dark energy models with a general parameterization of the scalar potentials. Our analysis also considers the scenario of having both phantom…
Generalized tracker quintessence models for dark energy
L. Arturo Urena-Lopez, Nandan Roy
We study the dynamical properties of tracker quintessence models using a general parametrization of their corresponding potentials, and show that there is a general condition for t…
Dynamical System Analysis for Steep Potentials
Sudipta Das, Manisha Banerjee, Nandan Roy
In this work we have performed the dynamical system analysis for steep(er) exponential potentials considering different values of the steepness index . We have performed the ana…
The arbitrariness of potentials in interacting quintessence models
Nandan Roy, Kazuharu Bamba
We study the interacting quintessence model with two different types of interaction by introducing a general parameterization of the quintessence potentials. The form of the quinte…
Second Order Perturbative Effects on the Acoustic Geometry
Nandan Roy, Shivani Singh, Sankhasubhra Nag +1
In this work, we have studied the effect of higher order perturbations, particularly the second order in details, on the sonic horizon. We have considered two different schemes of…
New general parametrization of quintessence fields and its observational constraints
Nandan Roy, Alma X. Gonzalez-Morales, L. Arturo Urena-Lopez
We present a new parameterization of quintessence potentials for dark energy based directly upon the dynamical properties of the equations of motion. Such parameterization arises n…