Collected Works of Prof. Rajasekaran https://dspace.imsc.res.in/xmlui/handle/123456789/624 2026-10-06T06:39:36Z 2026-10-06T06:39:36Z Rajasekaran G. https://dspace.imsc.res.in/xmlui/handle/123456789/839 2023-11-08T10:23:22Z 1988-01-01T00:00:00Z

Introduction to String Theories Rajasekaran G.

1988-01-01T00:00:00Z Bipin.R.Desai. Rajasekaran G. Utpal Sarkar https://dspace.imsc.res.in/xmlui/handle/123456789/827 2023-11-17T10:13:29Z 2005-01-01T00:00:00Z

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 Rajasekaran G. https://dspace.imsc.res.in/xmlui/handle/123456789/836 2023-11-14T11:16:12Z 1995-01-01T00:00:00Z

Generalized Fock Spaces and New Forms of Quantum Statistics Rajasekaran G. The recent discoveries of new forms of quantum statistics require a close look at the under-lying Fock space structure. This exercise becomes all the more important in order to provide a general classification scheme for various forms of statistics, and establish interconnections among them whenever it is possible. We formulate a theory of generalized Fock spaces, which has a three tired structure consisting of Fock space, statistics and algebra. This general formalism unifies various forms of statistics and algebras, which were earlier considered to describe different systems. Besides, the formalism allows us to construct many new kinds of quantum statistics and the associated algebras of creation and destruction operators. Some of these are: orthostatistics, null statistics or statistics of frozen order, quantum group based statistics and its many avatars, and ‘doubly-infinite’ statistics. The emergence of new forms of quantum statistics for particles interacting with singular potential is also highlighted.

1995-01-01T00:00:00Z Rajasekaran G. Ramachandran R. https://dspace.imsc.res.in/xmlui/handle/123456789/832 2023-11-17T11:18:23Z 1997-01-01T00:00:00Z

HEP research in the Indian context - Reply Rajasekaran G.; Ramachandran R.

1997-01-01T00:00:00Z