Ennackal Chandy George Sudarshan (also known as
E. C. G. Sudarshan;(
Malayalam: എണ്ണയ്ക്കൽ ചാണ്ടി ജോർജ് സുദർശൻ ); born 16 September 1931) is an Indian theoretical
physicist and a professor at the
University of Texas. Sudarshan has been credited with numerous contributions to the field of theoretical Physics including
Optical coherence,
Sudarshan-Glauber representation,
V-A theory,
Tachyons,
Quantum Zeno effect,
Open quantum system,
Spin-statistics theorem, non-invariance groups, positive maps of density matrices, quantum computation among others. His contributions include also relations between east and west, philosophy and religion.