Prof M.Sivakumar (in the middle) is Chief coordinator of PTTS. He is in School of Physics, University of Hyderabad. His research interest is quantum field theory. Prof Raghavan Rangarajan (on the left) is Ahmedabad university(formerly in Physiical Research Lab) and his research interest is astro-particle physics and cosmology.Prof SVM Satyanarayana (on the right) is in department of Physics,Pondycherry University. His research interest is theoretical condensed matter physics.