34 citations · 129 across the 12 of their papers we have counts for
9 papers · 1 filter
Confined H ion within a density functional framework
Sangita Majumdar, Neetik Mukherjee, Amlan K. Roy
Ground and excited states of a confined negative Hydrogen ion has been pursued under Kohn-Sham density functional approach by invoking a physically motivated work-function-based ex…
Ro-vibrational energy analysis of Manning-Rosen and Pöschl-Teller potentials with a new improved approximation in the centrifugal term
Debraj Nath, Amlan K. Roy
Two physically important potentials (Manning-Rosen and Pöschl-Teller) are considered for the ro-vibrational energy in diatomic molecules. An improved new approximation is invoked f…
Ro-vibrational energy and thermodynamic properties of molecules subjected to Deng-Fan potential through an improved approximation
Debraj Nath, Amlan K. Roy
Accurate solution of the Schrödinger equation with Deng-Fan potential is presented by means of Nikiforov-Uvarov method. A modified Pekeris-type approximation is proposed for the ce…
Density functional study of atoms spatially confined inside a hard sphere
Sangita Majumdar, Amlan K. Roy
An atom placed inside a cavity of finite dimension offers many interesting features, and thus has been a topic of great current activity. This work proposes a density functional ap…
A self-consistent systematic optimization of range-separated hybrid functionals from first principles
Abhisek Ghosal, Amlan K. Roy
In this communication, we represent a self-consistent systematic optimization procedure for the development of optimally tuned (OT) range-separated hybrid (RSH) functionals from \e…
Hydrogen-like ions in plasma environment
Neetik Mukherjee, Chandra Nath Patra, Amlan K. Roy
The behavior of H-like ions embedded in astrophysical plasmas in the form of \emph{dense, strongly and weakly coupled} plasmas are investigated. In these, the increase and decrease…