Y P Viyogi has studied projectile fragmentation reactions involving intermediate energy of heavy nuclei at Berkeley. He has been also involved in the study of quark gluon plasma using indigenous photon multiplicity detector (PMD) at CERN in Geneva and Brookhaven National Laboratory in USA. He led Indian group of physicists at the ALICE experiment in CERN. In July 1993, Y P Viyogi published an article on heavy ion collisions having title "Ultra - relativistic heavy ion experiments: a perspective" at Pramana Journal of Physics.