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	~~{{Portal\|India\|Physics}}~~

	== Notes ==		== Notes ==

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	'''Deepak Kumar''' (1 April ~~1946–26~~ January 2016) was an Indian [[condensed matter physicist]] and a professor at the School of Physical Sciences of [[Jawaharlal Nehru University]]. Known for his research on [[quantum mechanic]]s and other areas of condensed matter physics, Kumar was an elected fellow of the [[Indian Academy of Sciences]]. The [[Council of Scientific and Industrial Research]], the apex agency of the Government of India for scientific research, awarded him the [[Shanti Swarup Bhatnagar Prize for Science and Technology]], one of the highest Indian science awards, for his contributions to physical sciences in 1988.<ref name="View Bhatnagar Awardees">{{cite web \| url=http://ssbprize.gov.in/Content/AwardeeList.aspx \| title=View Bhatnagar Awardees \| publisher=Shanti Swarup Bhatnagar Prize \| date=2016 \| access-date=12 November 2016}}</ref>{{Refn\|group=note\|Long link – please select award year to see details}}		'''Deepak Kumar''' (1 April 1946 – 26 January 2016) was an Indian [[condensed matter physicist]] and a professor at the School of Physical Sciences of [[Jawaharlal Nehru University]]. Known for his research on [[quantum mechanic]]s and other areas of condensed matter physics, Kumar was an elected fellow of the [[Indian Academy of Sciences]]. The [[Council of Scientific and Industrial Research]], the apex agency of the Government of India for scientific research, awarded him the [[Shanti Swarup Bhatnagar Prize for Science and Technology]], one of the highest Indian science awards, for his contributions to physical sciences in 1988.<ref name="View Bhatnagar Awardees">{{cite web \| url=http://ssbprize.gov.in/Content/AwardeeList.aspx \| title=View Bhatnagar Awardees \| publisher=Shanti Swarup Bhatnagar Prize \| date=2016 \| access-date=12 November 2016}}</ref>{{Refn\|group=note\|Long link – please select award year to see details}}

	== Biography ==		== Biography ==

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{{Use dmy dates|date=July 2017}}
{{Use Indian English|date=July 2017}}
{{Infobox scientist
| name = Deepak Kumar
|image = Deepak_Kumar_2007.jpg
|image_size = 245px
|caption = Deepak Kumar at J.N.U in 2007
| alt =
| birth_date = {{Birth date|1946|4|1|df=y}}
| birth_place = [[New Delhi]], India
| death_date = {{Death date and age|2016|1|26|1946|4|1|df=y}}
| death_place = New Delhi, India
| residence =
| nationality = [[Indian nationality|Indian]]
| fields = {{ublist | [[Condensed matter physics]] }}
| workplaces = {{ublist | [[IIT Roorkee]] | [[Jawaharlal Nehru University]] }}
| alma_mater = {{ublist | [[St. Stephen's College, Delhi]] | [[University of Delhi]] | [[University of Pennsylvania]] }}
| doctoral_advisor = {{ublist | A. B. Harris }}
| doctoral_students =
| known_for = Studies on theory of disordered magnetic systems
| awards = {{ublist| 1988 [[Shanti Swarup Bhatnagar Prize]] | }}
}}
'''Deepak Kumar''' (1 April 1946–26 January 2016) was an Indian [[condensed matter physicist]] and a professor at the School of Physical Sciences of [[Jawaharlal Nehru University]]. Known for his research on [[quantum mechanic]]s and other areas of condensed matter physics, Kumar was an elected fellow of the [[Indian Academy of Sciences]]. The [[Council of Scientific and Industrial Research]], the apex agency of the Government of India for scientific research, awarded him the [[Shanti Swarup Bhatnagar Prize for Science and Technology]], one of the highest Indian science awards, for his contributions to physical sciences in 1988.<ref name="View Bhatnagar Awardees">{{cite web | url=http://ssbprize.gov.in/Content/AwardeeList.aspx | title=View Bhatnagar Awardees | publisher=Shanti Swarup Bhatnagar Prize | date=2016 | access-date=12 November 2016}}</ref>{{Refn|group=note|Long link – please select award year to see details}}

== Biography ==
[[File:Main(Administrative)Building IIT-Roorkee.JPG|thumb|235px|right|IIT Roorkee]]
Born on 1 April 1946 in New Delhi, Kumar completed his early schooling at local schools in 1962 before joining [[St. Stephen's College, Delhi]] from where he graduated in science with honors in 1965.<ref name="Deepak Kumar (1946–2016)">{{Cite web |url=http://www.currentscience.ac.in/Volumes/110/06/1112.pdf |title=Deepak Kumar (1946–2016) |date=March 2016 |publisher=Current Science Volume 110 Issue 6}}</ref> He continued his studies at the [[University of Delhi]] and after earning a master's degree in physics in 1967, he moved to the US to pursue his doctoral studies under the supervision of A. B. Harris at [[University of Pennsylvania]] to secure a PhD in 1972.<ref name="Faculty Profile">{{Cite web |url=http://www.jnu.ac.in/Faculty/dkumar/ |title=Faculty Profile |date=2017 |publisher=Jawaharlal Nehru University}}</ref> Subsequently, Kumar returned to India to start his career as a member of faculty of the physics department at [[University of Roorkee]] (present-day [[Indian Institute of Technology Roorkee]]). He served the institution for 16 years and when [[Jawaharlal Nehru University]] established a School of Physical Sciences, Kumar returned to his native place to take up the position of a professor at the school in 1988.<ref name="A Physicist and a Gentleman">{{Cite web |url=https://ramramaswamy.wordpress.com/2016/01/27/a-physicist-and-a-gentleman/ |title=A Physicist and a Gentleman |date=2017 |publisher=Ramaswamy.com}}</ref> In between, he had a short spell in Germany as an [[Alexander von Humboldt Fellow]] during 1978–79.<ref name="Deepak Kumar (1946–2016)" />

Kumar maintained his association with JNU for the rest of his life and it was during his return from the university on 25 January 2016, he fell ill. He died the next day at a local hospital, at the age of 69, survived by son, Sharad, and daughter Jyoti.<ref name="Deepak Kumar (1946–2016)" />

== Legacy ==
The main focus of Kumar's research in condensed matter physics was the theory related to [[Order and disorder|disordered]] magnetic systems.<ref name="Brief Profile of the Awardee">{{Cite web |url=http://ssbprize.gov.in/Content/Detail.aspx?AID=160 |title=Brief Profile of the Awardee |date=2017 |publisher=Shanti Swarup Bhatnagar Prize |access-date=12 November 2016}}</ref> At IIT Roorkee, he collaborated with a number of scientists such as [[Mustansir Barma]] and S. Shenoy and studied [[superparamagnetic]] particles, [[magnetic anisotropy]] and disordered ultrametric models.<ref name="Deepak Kumar (1946–2016)" /> Kumar's work on the percolation threshold of anisotropic magnets widened the understanding of the fractal nature of spin clusters and was one of the first Indian scientists to estimate the consequences of the clusters near the [[percolation threshold]].<ref name="Handbook of Shanti Swarup Bhatnagar Prize Winners">{{cite web | url=http://www.csirhrdg.res.in/ssb.pdf | title=Handbook of Shanti Swarup Bhatnagar Prize Winners | publisher=Council of Scientific and Industrial Research | date=1999 | access-date=12 May 2017 | archive-url=https://web.archive.org/web/20160304043957/http://www.csirhrdg.res.in/ssb.pdf | archive-date=4 March 2016 | url-status=dead }}</ref> [[Binary liquid]]s, [[statistical mechanics]], phase separation, [[Stern–Gerlach experiment|Stern–Gerlach measurement]] and [[Bell’s inequality]] were some of the other areas of his study for which he collaborated with many physicists including Subir Kumar Sarkar, Sanjay Puri, Rupamanjari Ghosh, [[Ramamurti Rajaraman]] and A. K. Rastogi. Kumar's studies have been documented by way of a number of articles<ref name="On ResearchGate">{{Cite web |url=https://www.researchgate.net/profile/Deepak_Kumar22 |title=On ResearchGate |date=2017 }}</ref>{{Refn|group=note|Please see ''Selected bibliography'' section}} and the online article repository of Indian Academy of Sciences has listed 98 of them.<ref name="Browse by Fellow">{{Cite web |url=http://repository.ias.ac.in/view/fellows/Deepak_Kumar=3ADr=3A=3A.html |title=Browse by Fellow |date=2017 |publisher=Indian Academy of Sciences}}</ref> Besides, he co-edited two books viz. ''Proceedings Of The Discussion Meeting On Physics Of Defects'' with [[C. N. R. Rao]],<ref name="Proceedings Of The Discussion Meeting On Physics Of Defects">{{Cite book |url=https://core.ac.uk/display/11638490 |title=Proceedings Of The Discussion Meeting On Physics Of Defects |last=C. N. R. Rao, Deepak Kumar |publisher=Indian Academy of Sciences |year=1988}}</ref> and ''Proceedings of the Conference on Quantum Many-Body Physics: From cosmology to superconductivity'' with S. Puri.<ref name="Proceedings of the Conference on Quantum Many-Body Physics: From cosmology to superconductivity">{{Cite book |url=https://www.researchgate.net/publication/278600804 |title=Proceedings of the Conference on Quantum Many-Body Physics: From cosmology to superconductivity |last=Deepak Kumar, S. Puri |publisher=International Journal of Modern Physics B |year=2000}}</ref> Kumar also wrote about the sociological aspects of education and research,<ref name="University science set to decline: a new caste system">{{Cite journal |last=Deepak Kumar |title=University science set to decline: a new caste system |url=http://www.currentscience.ac.in/Volumes/101/02/0149.pdf |journal=Current Science |date=July 2011 |volume=101 |issue=2 |page=149}}</ref> contributed chapters to books published by others<ref name="Rao2002">{{cite book|author=Sumathi Rao|title=Field Theories in Condensed Matter Physics|url=https://books.google.com/books?id=wuqmQJDeEa0C&pg=PA119|date=30 May 2002|publisher=CRC Press|isbn=978-0-7503-0876-2|pages=119–}}</ref><ref name="Shukla1982">{{cite book|author=Prabodh Shukla|title=Physics of Disordered Solids|url=https://books.google.com/books?id=pghcE6FTwxUC&pg=PA57|year=1982|publisher=Mittal Publications|pages=57–|id=GGKEY:55XP02JETHQ}}</ref><ref>{{cite book|title=Proceedings of the Nuclear Physics and Solid State Physics Symposium|url=https://books.google.com/books?id=YqsZAAAAIAAJ|year=1982|publisher=Department of Atomic Energy, Government of India.}}</ref><ref name="PrakashPathak1990">{{cite book|author1=S. Prakash|author2=K. N. Pathak|title=Advances in statistical physics of solids and liquids|url=https://books.google.com/books?id=mJzvAAAAMAAJ|year=1990|publisher=Wiley|isbn=978-0-470-21710-8}}</ref> and his work has drawn citations from others.<ref name="Physics2004">{{cite book|author=Institute of Pure and Applied Physics|title=Japanese Journal of Applied Physics|url=https://books.google.com/books?id=hwEqAAAAYAAJ|year=2004|publisher=The Institute of Pure and Applied Physics}}</ref><ref>{{cite book|title=Japanese Journal of Applied Physics: Regular papers & short notes|url=https://books.google.com/books?id=pYo7AQAAIAAJ|year=2004|publisher=Publication Board, Japanese Journal of Applied Physics}}</ref><ref>{{cite book|title=Silver Jubilee Physics Symposium: 25th Year of the Nuclear Physics and Solid State Physics Symposium, Bhabha Atomic Research Centre, Bombay, December 28, 1981 – January 1, 1982|url=https://books.google.com/books?id=inkfAQAAMAAJ|year=1981|publisher=publisher not identified}}</ref><ref name="Ramachandran1985">{{cite book|author=R. Ramachandran|title=Recent advances in theoretical physics: proceedings of the Silver Jubilee Workshop held at IIT, Kanpur, December 1984|url=https://books.google.com/books?id=2NPuAAAAIAAJ|date=October 1985|publisher=World Scientific|isbn=978-9971-5-0014-6}}</ref>

== Awards and honors ==
Kumar, an [[Alexander von Humboldt Fellow]], was selected as a senior associate of [[Abdus Salam International Centre for Theoretical Physics]] in 1986 and the [[Indian Academy of Sciences]] elected him as a fellow in 1987.<ref name="Fellow profile">{{Cite web |url=http://www.ias.ac.in/describe/fellow/Deepak_Kumar,_Dr_ |title=Fellow profile |date=2017 |publisher=Indian Academy of Sciences}}</ref> The Council of Scientific and Industrial Research awarded him the [[Shanti Swarup Bhatnagar Prize]], one of the highest Indian science awards in 1988.<ref name="CSIR list of Awardees">{{Cite web |url=http://www.csir.res.in/careeraward/prize-winner-indexdiscipline-wise |title=CSIR list of Awardees |date=2017 |publisher=Council of Scientific and Industrial Research}}</ref> Kumar was also associated with Indian Physics Association and Material Research Society of India as a member.<ref name="Deepak Kumar (1946–2016)" />

== Selected bibliography ==
* {{cite book|author=Prabodh Shukla|title=Physics of Disordered Solids|url=https://books.google.com/books?id=pghcE6FTwxUC&pg=PA57|year=1982|publisher=Mittal Publications|pages=57–|id=GGKEY:55XP02JETHQ}}
* {{cite book|author1=S. Prakash|author2=K. N. Pathak|title=Advances in statistical physics of solids and liquids|year=1990|publisher=Wiley|isbn=978-0-470-21710-8}}
* {{cite book|author=Sumathi Rao|title=Field Theories in Condensed Matter Physics|date=30 May 2002|publisher=CRC Press|isbn=978-0-7503-0876-2|pages=119–}}
* {{Cite journal |last=Deepak Kumar, Vikram Soni |title=Single particle Schrödinger equation with gravitational self-interaction |journal=Physics Letters A |date=2000 |volume=271 |issue=3 |pages=157–166 |doi=10.1016/S0375-9601(00)00361-3 |bibcode=2000PhLA..271..157K }}
* {{Cite journal |last=Vikas Malik, Deepak Kumar |title=Correlated hopping in Coulomb glass |journal=Journal of Physics: Condensed Matter |date=2003 |volume=15 |issue=32 |pages=5451–5460 |doi=10.1088/0953-8984/15/32/306|bibcode=2003JPCM...15.5451M }}
* {{Cite journal |last=Sanjay Puri, Deepak KUmar |title=Aging and equilibrium fluctuations for domain growth in ternary mixtures |journal=Physical Review Letters |date=2004 |volume=93 |issue=2 |page=025701 |doi=10.1103/PhysRevLett.93.025701|pmid=15323929 |bibcode=2004PhRvL..93b5701P }}

== See also ==
{{Div col|colwidth=30em}}
* [[Order and disorder]]
* [[Superparamagnetism]]
* [[Bell's theorem]]
{{div col end}}
{{Portal|India|Physics}}

== Notes ==
{{Reflist|group=note|2}}

== References ==
{{Reflist|30em}}

== Further reading ==
* {{Cite journal |last=Deepak Kumar |title=University science set to decline: a new caste system (full text) |url=http://www.currentscience.ac.in/Volumes/101/02/0149.pdf |journal=Current Science |date=July 2011 |volume=101 |issue=2 |page=149}}

{{SSBPST recipients in Physical Science}}

{{Authority control}}

{{DEFAULTSORT:Kumar, Deepak}}
[[Category:Recipients of the Shanti Swarup Bhatnagar Award in Physical Science]]
[[Category:Medical doctors from Delhi]]
[[Category:Indian scientific authors]]
[[Category:1946 births]]
[[Category:2016 deaths]]
[[Category:People from New Delhi]]
[[Category:20th-century Indian physicists]]
[[Category:Indian condensed matter physicists]]
[[Category:St. Stephen's College, Delhi alumni]]
[[Category:University of Delhi alumni]]
[[Category:University of Pennsylvania alumni]]
[[Category:Indian Institute of Technology Roorkee]]
[[Category:Jawaharlal Nehru University faculty]]
[[Category:Alexander von Humboldt Fellows]]
[[Category:Fellows of the Indian Academy of Sciences]]

Deepak Kumar (physicist) - Revision history

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