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  Ennackal Chandy George Sudarshan

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Name Dr ECG Sudarshan
(Dr Ennackal Chandy George Sudarshan)
FNA ID N73-0810
Address Department of Physics, Texas University, Austin,
City Tx
Pin Code 78712
Country USA
Gender Male
Specialization Particles, Quantized Fields and Dynamics Foundations
Service in the Council
Qualification PhD (Rochester), DSc, DSc (hc)
Membership FASc, FTWAS
  Award The Satyendranath Bose Medal, 1977
  Year of Election 1973  
E-mail sudarshan@physics.utcxas.edu
Personal Website

ECG Sudarshan did his PhD (1958) from University of Rochester, USA and was awarded the DSc (hc), University of Wisconsin (1969), University of Delhi (1973). He specialized in quantum electrodynamics, particle physics. He served as the Associate Professor, University of Rochester, Professor and Director, Research Program in Elementary Particles, Syracuse University, Professor, Center for Particle Theory, University of Texas, Austin, Senior Professor, Centre for Theoretical Studies, Indian Institute of Science, Bangalore, Professor, University of Berne, Switzerland (1964-65), Sir CV Raman Distinguished Visiting Professor, University of Madras (1972-73), Jubilems Professor, Chalmers University of Goteborg, Sweden and Distinguished Visiting Scholar, Rice University of Houstan, USA.

Academic and Research Achievements: Sudarshan's early work was on the nature of weak interactions. Here he discovered the Chiral V-A theory of weak interactions and enabled the next step of unification into the standard model. As a student, he made the first use of broken symmetry (with Marshak and Okubo) in formulating the sum rules for electromagnetic properties of hadrons, a discovery which was generalized into the Gell-Mann-Okubo formula. With Currie and Jordan, he formulated relativistic Hamiltonian theories of particle interactions and proved that if the particle trajectories are world lines, there can be no interaction. He did extensive work on quantum optics and proved the important theorem on the equivalence of quantum and semi-classical descriptions of optical coherence into a quantum electrodynamic frame work. His work (together with Chiu and Gorini) on generalized quantum mechanics is the first example of a quantum theory with analytic continuation of the state space. He worked with Imbo on the general theory of exotic statistics for particles and excitations. To sum up, Sudharsan's work is not confined to particle physics, but has influenced statistical mechanics, quantum optics and classical mechanics.

Other Contributions: Prof Sudarshan Authored/co-authored Recent Developments in Theoretical Physics (World Scientific, 1987), edited/co-edited: The Past Decade in Particle Theory and Classical Dynamics. He is member of the editorial boards of Journal of Mathematical Physics, Journal of Mathematical & Physics, Rep. Math. Phys., Journal of Social Biological Structures, and Letters in Mathematical Physics.

Awards and Honours: Sudarshan is the recipient of Satyendranath Bose Medal of INSA (1977), Sarvadikari Medal (University of Calcutta) (1993). He is a Fellow, Academy of Sciences for the Developing World, American Physical Society, and Indian Academy of Sciences, Member, International Academy of the Philosophy of Science.

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