Angom Dilip Kumar Singh Abstract

Atoms in isolation and company

Angom Dilip Kumar Singh Theoretical Physics Division

 Physical Research Laboratory
 Navarangpura, Ahmedabad 

Electromagnetic transitions between low lying levels of an atom are suitable probes to understand phenomena arising from subatomic physics. On the other hand, the high lying states that are close to the ionization thresh hold are appropriate for testing models of statistical spectroscopy. We have carried out calculations of atomic properties at these two extreme ends of the atomic spectra. For a pair of atoms, an additional complication is the interatomic interaction. This is a crucial parameter in many body physics of dilute atomic gases. Recently, we examined p-wave interaction in fermionic isotopes of Lithium and Cesium. The results on Lithium are of interest as experiments have demonstrated existence of novel phases.