|Born||1956 (age 57–58)
Kolkata, West Bengal, India
Stanford Linear Accelerator Center
Tata Institute of Fundamental Research
Harish-Chandra Research Institute
|Alma mater||Presidency College, Kolkata
University of Calcutta
Stony Brook University
|Doctoral advisor||George Sterman|
|Known for||Contributions to string field theory|
|Notable awards||G.D. Birla Award for Scientific Research (1996)
Fundamental Physics Prize (2012)
Padma Bhushan (2013)
Dirac Medal (2014)
Ashoke Sen, FRS (Bengali: অশোক সেন; born 1956) is an Indian theoretical physicist and distinguished professor at the Harish-Chandra Research Institute, Allahabad. He also is the Morningstar Visiting professor at MIT. His main area of work is String Theory. He was among the first recipients of the Fundamental Physics Prize “for opening the path to the realisation that all string theories are different limits of the same underlying theory”. This richly endowed prize has been set up by the Russian billionaire Yuri Milner for rewarding scientific breakthroughs. Ashok Sen was the only recipient from Asia of this inaugural prize.
After completing his schooling from the Sailendra Sircar Vidyalaya in Kolkata, he earned his bachelor’s of science degree in 1975 from the Presidency College under the University of Calcutta, and his master’s three years later from the Indian Institute of Technology Kanpur. During his undergraduate studies at Presidency, he was greatly inspired by the work and teaching of Amal Kumar Raychaudhuri. He did his doctoral work in physics at Stony Brook University.
Ashoke Sen made a number of major original contributions to the subject of string theory, including his landmark paper on strong-weak coupling duality or S-duality, which was influential in changing the course of research in the field. He pioneered the study of unstable D-branes and made the famous Sen conjecture about open string tachyon condensation on such branes. His description of rolling tachyons has been influential in string cosmology. He has also co-authored many important papers on string field theory. In 1998 he won the fellowship of the Royal Society on being nominated by the theoretical physicist Stephen Hawking. His contributions include the entropy function formalism for extremal black holes and its applications to attractors. His current research interests are centered around the attractor mechanism and the precision counting of microstates of black holes.
Honors and awards
- Doctor of Literature(honorary),2013,awarded by Jadavpur University.
- Doctor of Science (Honoris Causa), 2013, awarded by IIT Bombay 
- M.P. Birla Memorial Award in 2013
- Padma Bhushan in 2013.
- Fundamental Physics Prize, 2012, for his work on string theory.
- Doctor of Science (Honoris Causa), 2009, awarded by IIT Kharagpur
- Infosys Prize in the Mathematical Sciences, 2009.
- Padma Shri in 2001
- Fellow of the Royal Society 1998
- S.S. Bhatnagar award in 1994
- ICTP Prize in 1989
- Dirac Medal in 2014
- Pulakkat, Hari (Dec 19, 2013). "How many of us know about Breakthrough Prize winner, Ashoke Sen?". The Economic Times.
- An Interview with Ashoke Sen, http://gonitsora.com
- Physicist with pillow power
- Sen, Ashoke (1994). "Dyon - monopole bound states, selfdual harmonic forms on the multi - monopole moduli space, and SL(2,Z) invariance in string theory". Phys. Lett. B329: 217–221. arXiv:hep-th/9402032. Bibcode:1994PhLB..329..217S. doi:10.1016/0370-2693(94)90763-3.
- Sen, Ashoke (1998). "Tachyon condensation on the brane antibrane system". JHEP 8: 012. arXiv:hep-th/9805170. Bibcode:1998JHEP...08..012S. doi:10.1088/1126-6708/1998/08/012.
- Sen, Ashoke (2002). "Rolling Tachyon". JHEP 4: 048. arXiv:hep-th/0203211. Bibcode:2002JHEP...04..048S. doi:10.1088/1126-6708/2002/04/048.
- "Rajesh Khanna, Sridevi, Mary Kom, Rahul Dravid on Padma list". Times of India. TNN. Jan 26, 2013.
- New annual US$3 million Fundamental Physics Prize recognizes transformative advances in the field, FPP, accessed 1 August 2012
- "Indian scientist Ashoke Sen bags top physics honour". The Times Of India. 2012-08-02.
- Infosys Prize 2009 Mathematical Sciences
- "ICTP Prize Winner 1989". Retrieved 2009-11-17.
- "Dirac Medallists 2014".
- Thomson Honours Leading Indian Scientists Five people receive the "Thomson Citation Laureate Award", including physics professor Ashoke Sen of the Harish-Chandra Research Institute.
- The Hindu, Sunday, January 7, 2001: Stringing together the ultimate law States that Dr. Ashoke Sen of HRI has "made several important contributions to the String Theory".