Ashoke Sen

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Ashoke Sen
Native name অশোক সেন
Born (1956-07-15) 15 July 1956 (age 62)
Kolkata, West Bengal, India
Residence Allahabad, Uttar Pradesh, India
Nationality Indian
Citizenship India
Alma mater
Known for Contributions to string field theory
Sen Conjecture
Spouse(s) Sumathi Rao
Scientific career
Fields Physics
Doctoral advisor

Ashoke Sen, FRS (/əˈʃk sɛn/; born 1956) is an Indian theoretical physicist and distinguished professor at the Harish-Chandra Research Institute, Allahabad.[1] He is also the Morningstar Visiting professor at MIT and a distinguished professor at the Korea Institute for Advanced Study. 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”.

Early life

He was born on 15 July 1956[2] in Kolkata, and is the elder son of Anil Kumar Sen, a former professor of physics at the Scottish Church College, and Gouri Sen, a homemaker.[3]

After completing his schooling from Scottish Church Collegiate School and Sailendra Sircar Vidyalaya in Kolkata, he earned his Bachelor of Science degree in 1975 from the Presidency College under the University of Calcutta, and his master’s a year 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,[4] 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.[5] His description of rolling tachyons[6] 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.[1] His contributions include the entropy function formalism for extremal black holes and its applications to attractors. His recent important works include the attractor mechanism and the precision counting of microstates of black holes, and new developments in string perturbation theory. He joined the National Institute of Science Education and Research (NISER), Bhubaneswar, India as an honorary fellow.[7]

Honors and awards


  1. ^ a b c Pulakkat, Hari (Dec 19, 2013). "How many of us know about Breakthrough Prize winner, Ashoke Sen?". The Economic Times.
  2. ^ a b "Fellow Profile — Sen, Prof. Ashoke". Indian Academy of Sciences. Bangalore: Indian Academy of Sciences. Retrieved 23 January 2016.
  3. ^ Physicist with pillow power
  4. ^ 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.
  5. ^ 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.
  6. ^ Sen, Ashoke (2002). "Rolling Tachyon". JHEP. 4: 048. arXiv:hep-th/0203211. Bibcode:2002JHEP...04..048S. doi:10.1088/1126-6708/2002/04/048.
  7. ^ "Archived copy". Archived from the original on 15 June 2015. Retrieved 12 June 2015.
  8. ^ "Dirac Medallists 2014".
  9. ^ "Archived copy". Archived from the original on 29 November 2013. Retrieved 19 November 2013.
  10. ^ "Rajesh Khanna, Sridevi, Mary Kom, Rahul Dravid on Padma list". Times of India. TNN. Jan 26, 2013.
  11. ^ New annual US$3 million Fundamental Physics Prize recognizes transformative advances in the field Archived 3 August 2012 at the Wayback Machine., FPP, accessed 1 August 2012
  12. ^ "Indian scientist Ashoke Sen bags top physics honour". The Times Of India. 2012-08-02.
  13. ^ [1][permanent dead link]
  14. ^
  15. ^ Infosys Prize 2009 Mathematical Sciences
  16. ^ "Padma Awards" (PDF). Ministry of Home Affairs, Government of India. 2015. Archived from the original (PDF) on 15 November 2014. Retrieved July 21, 2015.
  17. ^ "Prizes and Awards". The World Academy of Sciences. 2016.
  18. ^ The Year Book 2014 // Indian National Science Academy, New Delhi
  19. ^ "ICTP Prize Winner 1989". Retrieved 2009-11-17.

External links

  • Home page
  • "Thomson Honours Leading Indian Scientists"
  • The Hindu, Sunday, January 7, 2001: "Stringing together the ultimate law"
  • "Profile of Top 25 scientists in India". India Today. 2011-09-11. Retrieved 2018-01-17.
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