Ashoke Sen

For the Indian politician, see Ashoke Kumar Sen.Ashoke Sen, FRS (Bengali: ; born 1956)is an Indian Bengali theoretical physicist and distin-guished professor at the Harish-Chandra Research Insti-tute, Allahabad.[1] He also is the Morningstar Visitingprofessor at MIT. His main area of work is String Theory.He was among the rst recipients of the FundamentalPhysics Prize for opening the path to the realisation thatall string theories are dierent limits of the same under-lying theory. This prize has been set up by the Russianbillionaire Yuri Milner for rewarding scientic break-throughs.

1 Early lifeHe was born in Kolkata, and is the elder son of Anil Ku-mar Sen, a former professor of physics at the ScottishChurch College, and Gouri Sen, a homemaker.[2]

After completing his schooling from the Sailendra Sir-car Vidyalaya and the Scottish Church Collegiate Schoolin Kolkata, he earned his bachelors of science degree in1975 from the Presidency College under the Universityof Calcutta, and his masters three years later from theIndian Institute of Technology Kanpur. During his un-dergraduate studies at Presidency, he was greatly inspiredby the work and teaching of Amal Kumar Raychaudhuri.He did his doctoral work in physics at Stony Brook Uni-versity.

2 CareerAshoke Sen made a number of major original contri-butions to the subject of string theory, including hislandmark paper on strong-weak coupling duality or S-duality,[3] which was inuential in changing the courseof research in the eld. He pioneered the study of unsta-ble D-branes and made the famous Sen conjecture aboutopen string tachyon condensation on such branes.[4] Hisdescription of rolling tachyons[5] has been inuential instring cosmology. He has also co-authored many impor-tant papers on string eld theory. In 1998 he won the fel-lowship of the Royal Society on being nominated by thetheoretical physicist Stephen Hawking.[1] His contribu-tions include the entropy function formalism for extremalblack holes and its applications to attractors. His currentresearch interests are centered around the attractor mech-

anism and the precision counting of microstates of blackholes.

3 Honors and awards Dirac Medal in 2014.[6]

Doctor of Literature(honorary),2013,awarded byJadavpur University.

Doctor of Science (Honoris Causa), 2013, awardedby IIT Bombay [7]

M.P. Birla Memorial Award in 2013 Padma Bhushan in 2013.[8]

Fundamental Physics Prize, 2012, for his work onstring theory.[9][10]

Doctor of Science (Honoris Causa), 2009, awardedby IIT Kharagpur[11]

Infosys Prize in the Mathematical Sciences,2009.[12]

Padma Shri in 2001. Fellow of the Royal Society 1998.[1]

Fellow of the Indian National Science Academy(1996)[13]

S.S. Bhatnagar award in 1994. ICTP Prize in 1989.[14]

4 References[1] Pulakkat, Hari (Dec 19, 2013). How many of us know

about Breakthrough Prize winner, Ashoke Sen?". TheEconomic Times.

[2] Physicist with pillow power

[3] Sen, Ashoke (1994). Dyon - monopole bound states,selfdual harmonic forms on the multi - monopolemoduli space, and SL(2,Z) invariance in string theory.Phys. Lett. B329: 217221. arXiv:hep-th/9402032.Bibcode:1994PhLB..329..217S. doi:10.1016/0370-2693(94)90763-3.

1

2 5 EXTERNAL LINKS

[4] Sen, Ashoke (1998). Tachyon condensation on the braneantibrane system. JHEP 8: 012. arXiv:hep-th/9805170.Bibcode:1998JHEP...08..012S. doi:10.1088/1126-6708/1998/08/012.

[5] Sen, Ashoke (2002). Rolling Tachyon. JHEP 4: 048.arXiv:hep-th/0203211. Bibcode:2002JHEP...04..048S.doi:10.1088/1126-6708/2002/04/048.

[6] Dirac Medallists 2014.

[7]

[8] Rajesh Khanna, Sridevi, Mary Kom, Rahul Dravid onPadma list. Times of India. TNN. Jan 26, 2013.

[9] New annual US$3million Fundamental Physics Prize rec-ognizes transformative advances in the eld, FPP, ac-cessed 1 August 2012

[10] Indian scientist Ashoke Sen bags top physics honour.The Times Of India. 2012-08-02.

[11] http://www.iitkgp.ac.in/institute/index.php?page=honors

[12] Infosys Prize 2009 Mathematical Sciences

[13] The Year Book 2014 // Indian National Science Academy,New Delhi

[14] ICTP Prize Winner 1989. Retrieved 2009-11-17.

Thomson Honours Leading Indian Scientists Fivepeople receive the Thomson Citation LaureateAward, including physics professor Ashoke Sen ofthe Harish-Chandra Research Institute.

The Hindu, Sunday, January 7, 2001: Stringing to-gether the ultimate law States that Dr. Ashoke Senof HRI has made several important contributionsto the String Theory".

5 External links Home Page

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