Collected Works https://dspace.imsc.res.in/xmlui/handle/123456789/623 Collected Works 2026-08-25T09:04:37Z The discovery of Dirac equation and its impact on present-day Physics https://dspace.imsc.res.in/xmlui/handle/123456789/837 The discovery of Dirac equation and its impact on present-day Physics Rajasekaran G. 1993-01-01T00:00:00Z Introduction to String Theories https://dspace.imsc.res.in/xmlui/handle/123456789/839 Introduction to String Theories Rajasekaran G. 1988-01-01T00:00:00Z HEP research in the Indian context - Reply https://dspace.imsc.res.in/xmlui/handle/123456789/832 HEP research in the Indian context - Reply Rajasekaran G.; Ramachandran R. 1997-01-01T00:00:00Z Large neutrino mixing angles for type-I see-saw mechanism in SO(100 GUT https://dspace.imsc.res.in/xmlui/handle/123456789/827 Large neutrino mixing angles for type-I see-saw mechanism in SO(100 GUT Bipin.R.Desai.; Rajasekaran G.; Utpal Sarkar We consider the neutrino mixing angles in an SO(10) GUT with the usual Higgs structure in which neutrino masses are explained by the type-I see-saw mechanism. The Dirac-neutrino Yukawa matrix then has a structure similar to that of the u-quark. We determine the light neutrino mass matrix through type-I see-saw mechanism using the experimentally consistent u-quark Yukawa matrix. We find that large neutrino mixing-angles emerge naturally in this model. 2005-01-01T00:00:00Z