Indian Physicist Ashoke Sen Wins Oskar Klein Medal for 2026

Professor Ashoke Sen has won the Oskar Klein Medal for 2026, making him the first Indian physicist to receive this honour. The Bengaluru-based International Centre for Theoretical Sciences shared the news on Saturday, October 24, 2026. Mr. Sen serves as an ICTS-Infosys Madhava Chair Professor. He is known around the world for his early work on S-duality, the exact counting of black hole entropy, and string field theory, which helped shape modern string theory.

Lecture and Past Honours

Mr. Sen delivered the 2026 Oskar Klein Memorial Lecture on October 22 at Stockholm University's AlbaNova Centre. His talk was titled 'Gravity from Strings and Strings from Gravity'. Over his career, he has earned many other major awards. He received the Breakthrough Prize in Fundamental Physics in 2012 and the Dirac Medal in 2014. His past awards also include the Infosys Prize in Mathematical Sciences in 2009, the Shanti Swarup Bhatnagar Prize in 1994, the ICTP Prize in 1989, the Padma Shri, and the Padma Bhushan. He also became a Fellow of the Royal Society in 1998.

Reactions and Award Background

ICTS Director Rajesh Gopakumar congratulated Mr. Sen on the achievement. He noted that having Mr. Sen at the institute has been wonderful for setting a high standard of excellence. Stockholm University and the Nobel Committee for Physics of the Royal Swedish Academy of Sciences give out the medal every year. Named after Swedish theoretical physicist Oskar Klein, the medal started in 1988 to honour major contributions to physics. Past winners include Nobel laureates Chen-Ning Yang, Steven Weinberg, and Hans Bethe.

Context

Awards like the Oskar Klein Medal highlight lifetime achievements in theoretical physics and connect Indian research institutions to top global universities. Major prizes in this field often celebrate decades of complex mathematical work that deepens our understanding of the universe. International recognition for scientists working in India helps draw global attention to the country's growing research centers.