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Name Professor SM Roy
(Professor Shasanka Mohan Roy)
FNA ID N89-1033
Address DAE Raja Ramanna Fellow, School of Physical Sciences, Jawaharlal Nehru University,
City New Delhi
Pin Code 110067
Country India
Gender Male
Specialization Foundations of Quantum Theory & Particle Physics
Service in the Council
Qualification PhD
Membership FASc, FNASc, FTWAS
  Year of Election 1989  
E-mail shasanka1@yahoo.co.in
Personal Website http://www.theory.theory.tifr.res.in/~shasanka

Shasanka Mohan Roy received BSc (Hons) (1960) and MSc (Physics) (1962), both from Delhi University, and PhD (1966) from Princeton University. He worked at the Tata Institute of Fundamental Research (TIFR), Mumbai (1967-2006), where he was Chairman, Theoretical Physics Group Committee (1992-97), Senior Professor until 2006. He is DAE Raja Ramanna Fellow, School of Physical Sciences, Jawaharlal Nehru University, New Delhi (2006- ). He has held visiting positions at the University of California (1966-67), CERN, Geneva (1970-71, 1976, 1989, 1994, 2000), SUNY at Stony Brook (1975), CEN Saclay (1971-72), Syracuse University (1982-83, 1997), University of Lausanne (1983), University of Alberta (1991), Waseda University (1998), University of Montpellier (2002), Erwin Schroedinger Institute, Vienna (2002), MIT (2002), Ann Arbor, Michigan (2002), MSRI, Berkeley (2002), Isaac Newton Institute, Cambridge (2004), University of Kaiserslautern (2005), and University of York, UK (2005-06). His specialized in the areas quantum foundations, quantum information processing and elementary particle physics.

Academic and Research Achievements: Roy's researches on particle physics on exact consequences of unitarity, analyticity and crossing symmetry, and on foundations of quantum theory were inspired by Andre Martin's high energy bounds and John Bell's discoveries concerning the Einstein-Podolsky-Rosen paradox. His most celebrated work is on exact integral equation for pion-pion scattering involving only physical region partial waves. Known as Roy's equations, they have become a precision tool for the determination of pion-pion phase shifts from experiments. His other pioneering researches involve the Roy-Singh bounds, the upper bounds on particle-antiparticle total cross-section differences at high energies, the Martin-Roy work on semi-relativistic stability and critical mass of a system of bosons in gravitational interaction, the Roy-Singh studies on causal quantum mechanics treating position and momentum symmetrically, the Roy-Singh multiparticle Bell inequalities, Auberson-Mahoux-Roy-Singh Bell inequalities in phase space, Roy's multipartite separability inequalities exponentially stronger than local reality inequalities, the Dhar-Grover-Roy super-Zeno algorithm on preserving quantum states, and the Roy-Braunstein's exponentially enhanced quantum metrology.

Other Contributions: Roy started the Theoretical Physics Seminar Circuit programme, which has been running successfully for nearly 25 years with funding from DST.

Awards and Honours: Professor Roy received the SS Bhatnagar Prize in Physical Sciences (1981) and the SN Bose Birth Centenary Gold Medal of the Indian Science Congress Association (2003). He was elected Fellow of the Indian Academy of Sciences, Bangalore (1982), National Academy of Sciences (India), Allahabad (1993), and the Academy of Sciences for the Developing World (2002).

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