29 citations · 70 across the 9 of their papers we have counts for
9 papers
The Zubarev Double Time Greens function-A Vintage Many Body Technique
Vijay Singh, Shraddha Singh
These lecture notes present a comprehensive and powerful many-body technique pioneered in 1960 by D. N. Zubarev. The technique, known as the Zubarev Double Time Greens Function met…
India and the Calculus of Trigonometric Functions
Vijay A. Singh
We discuss the work of a brilliant line of Mathematicians who lived in central Kerala and starting with its founder Madhava (1350 CE) developed what can best be described as Calcul…
Energy and Angular Momentum Storage in a Rotating Magnet
H. S. Mani, Praveen Pathak, Vijay A. Singh
We consider a cylindrical metallic magnet that is set into rotation about a horizontal axis by a falling mass. In such a system the magnetic field will cause a radial current which…
Shallow Deep Transitions of Neutral and Charged Donor States in Semiconductor Quantum Dots
R. K. Pandey, Manoj K. Harbola, Vijay A. Singh
We carry out a detailed investigation of neutral () and charged () impurity states of hydrogen-like donors in spherical semiconductor quantum dots. The investigation is c…
Ferromagnetism in a dilute magnetic semiconductor -- Generalized RKKY interaction and spin-wave excitations
Avinash Singh, Animesh Datta, Subrat K. Das +1
Carrier-mediated ferromagnetism in a dilute magnetic semiconductor has been studied using i) a single-impurity based generalized RKKY approach which goes beyond linear response the…
The Band Gap in Silicon Nanocrystallites
V. Ranjan, Manish Kapoor, Vijay A. Singh
The gap in semiconductor nanocrystallites has been extensively studied both theoretically and experimentally over the last two decades. We have compared a recent ``state-of-the-art…