Research Interests: Cosmology And Particle Physics
Professor Raghavan Rangarajan is Dean and Professor at the School of Arts and Sciences, Ahmedabad University.
He was on the faculty of the Theoretical Physics Division at the Physical Research Laboratory (PRL), Ahmedabad for over twenty years before joining Ahmedabad University. His areas of research are cosmology and particle physics, and he works primarily on processes that occurred soon after the Big Bang in the very early Universe. In particular, his research has been on topics such as dark matter, the matter-antimatter asymmetry of the universe and cosmic microwave background radiation. He obtained his PhD from the University of California, Santa Barbara in 1994, and his undergraduate degree from Princeton University in 1988.
Professor Rangarajan has also been interested in working with college students and has been actively involved in programmes that bring together college students and academic researchers. He is an editor of the journal ‘Physics Education’ of the Indian Association of Physics Teachers.
Ph.D., Physics, 1994, University of California, Santa Barbara
A.B., Physics (cum laude), 1988, Princeton University, New Jersey
At Physical Reasearch Laboratory
SUMMARY OF RESEARCH
My research interests are in cosmology and particle physics, particularly in inflation (a period of accelerated expansion in the early Universe), and in high energy phenomena that occur in an inflationary Universe. I have been interested in the dynamics of inflation, in the generation of energy density perturbations during inflation, in the production of unwanted particles in the early Universe after inflation, etc. In addition, I have also been interested in understanding mechanisms to explain the observed matter-antimatter asymmetry of the Universe, or baryogenesis. In the past I have worked on different scenarios of baryogenesis involving black hole evaporation, heavy Majorana neutrinos, inflation decay, out-of-equilibrium decays of heavy particles and baryogenesis during the electroweak phase transition.
Some Public Talks