Kvora3: info

2026-03-07T12:48:32Z

info

New page

{{short description|Indian theoretical physicist}}
{{Use dmy dates|date=July 2022}}
{{Use Indian English|date=July 2022}}
{{Infobox scientist
| name = Sudhir Ranjan Jain
| image = Sudhir Ranjan Jain.jpg
| image_size =
| alt =
| caption = Jain in 2017
| fields = [[Nonlinear Dynamics]], [[Nuclear Physics]], [[Semiclassical physics]], [[Dynamical billiards]], [[Random Matrix Theory]], [[Quantum chaos]]
| workplaces = [[Bhabha Atomic Research Centre]]<br />[[Homi Bhabha National Institute]]<br />Centre for Excellence in Basic Sciences

| alma_mater = [[University of Delhi]] [[Bachelor of Science|(B.Sc.)]] <br /> [[Indian Institute of Technology, Delhi]] [[Master of Science|(M.Sc.)]] <br />[[University of Mumbai]] [[Doctor of Philosophy|(Ph.D.)]]

| doctoral_advisor = Suresh V. Lawande
| author_abbrev_bot =
| author_abbrev_zoo =
| influences =
| influenced =
| signature = 
| signature_alt =
| footnotes =
| spouse =
| notable_students =
}}

'''Sudhir Ranjan Jain''' (born 16 May 1963) is an Indian theoretical physicist<ref>{{cite news |title=Quantum leap by Indian scientists? |url=https://www.thehindu.com/todays-paper/tp-miscellaneous/quantum-leap-by-indian-scientists/article27869386.ece |work=The Hindu |date=14 September 2002 |language=en-IN}}</ref><ref>{{cite news |title=Building quantum computers |work=Deccan Herald |date=10 September 2002 |language=en-IN}}</ref><ref>{{cite news |title=Novel quantum systems to revolutionise communication |work=The Hindu |date=18 January 2009 |language=en-IN}}</ref> at the [[Bhabha Atomic Research Centre]], Mumbai, known for his contributions in complex quantum systems and Nonlinear dynamics. He worked as a scientist at the Nuclear Physics Division of Bhabha Atomic Research Centre, a professor at [[Homi Bhabha National Institute]] and an adjunct professor and member of the Academic Board at the Centre for Excellence in Basic Sciences. He is currently the Professor of Eminence at Somaiya Vidyavihar University. He has authored ''Mechanics, Waves and Thermodynamics: An Example-based Approach'' and ''A Primer on Fluid Mechanics with Applications''.<ref>{{cite book |last1=Jain |first1=Sudhir Ranjan |title=Mechanics, waves and thermodynamics: an example-based approach |date=2016 |publisher=Cambridge University Press |isbn=978-1-316-53523-3 |url=https://www.cambridge.org/core/books/mechanics-waves-and-thermodynamics/69295EC3CA096CE5CF6B0AD2D5693EB0 |language=en}}</ref>
<ref>{{cite book |last1=Jain |first1=Sudhir Ranjan |last2= Paradkar |first2= Bhooshan S.| last3=Chitre| first3=Shashikumar M.|title=A Primer on Fluid Mechanics with Applications |date=2023 |publisher=Springer-Verlag |doi=10.1007/978-3-031-20487-6 |isbn=978-3-031-20486-9|s2cid=255696384 |url=https://link.springer.com/book/10.1007/978-3-031-20487-6 |language=en}}</ref> His doctoral advisor was Prof. [[Suresh V. Lawande]],<ref>{{cite web |title=Sudhir Jain - The Mathematics Genealogy Project |url=https://www.genealogy.math.ndsu.nodak.edu/id.php?id=191455 |website=www.genealogy.math.ndsu.nodak.edu}}</ref> who was a student of [[Edward Teller]].<ref>{{cite web |title=Edward Teller - The Mathematics Genealogy Project |url=https://www.genealogy.math.ndsu.nodak.edu/id.php?id=105772 |website=www.genealogy.math.ndsu.nodak.edu}}</ref>

==Biography==
Sudhir Ranjan Jain was born in Mainpuri ([[Uttar Pradesh]], [[India]]). He completed his bachelor's degree from [[Hindu College, Delhi]], in 1983 and master's degree from [[Indian Institute of Technology, Delhi]], in 1985.<ref name="jain">{{cite web |title=Faculty Sudhir R. Jain |url=https://www.cbs.ac.in/faculty/faculty-sudhir-r-jain |website=www.cbs.ac.in}}</ref> He joined [[Bhabha Atomic Research Centre]] in 1986. Subsequently, he obtained his Ph.D. degree from [[University of Mumbai]] in 1994 under the guidance of Dr. Suresh V. Lawande.<ref>{{cite web |title=Suresh Lawande - The Mathematics Genealogy Project |url=https://www.genealogy.math.ndsu.nodak.edu/id.php?id=191456 |website=www.genealogy.math.ndsu.nodak.edu}}</ref> He did post-doctoral research at Centre for Nonlinear Phenomena and Complex Systems, [[Université libre de Bruxelles]], Belgium, with [[Pierre Gaspard]], where he worked on semiclassics of many-body Fermionic systems.<ref>{{cite journal |last1=Gaspard |first1=Pierre |last2=Jain |first2=Sudhir R. |title=Semiclassical theory for many-body Fermionic systems |journal=Pramana |date=February 1997 |volume=48 |issue=2 |pages=503–516 |doi=10.1007/BF02845659 |issn=0304-4289|arxiv=cond-mat/9609187 |bibcode=1997Prama..48..503G |s2cid=9301829 }}</ref>

He has been a visiting professor at [[Feza Gürsey Institute]], Istanbul, Turkey (2008), [[Institut Henri Poincaré]], Paris, France (2007), Institute of Theoretical Physics, [[Utrecht University]], Netherlands (2006) and Institute for Physical Science and Technology, [[University of Maryland, College Park]] (2005).<ref name="jain"/>

==Research==
Jain's areas of specialization are theoretical [[nuclear physics]],<ref>{{cite journal |last1=Jain |first1=Sudhir R |title=Semiclassical deuteron |journal=Journal of Physics G: Nuclear and Particle Physics |date=12 January 2004 |volume=30 |issue=2 |pages=157–164 |doi=10.1088/0954-3899/30/2/013 |bibcode=2004JPhG...30..157J |issn=0954-3899}}</ref><ref>{{cite journal |last1=Dwivedi |first1=Nishchal R. |last2=Kaur |first2=Harjeet |last3=Jain |first3=Sudhir R. |title=Semiclassical triton |journal=The European Physical Journal A |date=27 March 2018 |volume=54 |issue=3 |page=49 |doi=10.1140/epja/i2018-12480-y |language=en |issn=1434-601X|arxiv=1707.00307 |bibcode=2018EPJA...54...49D |s2cid=118910619 }}</ref><ref>{{cite journal |last1=Jain |first1=Arun K |last2=Joshi |first2=B N |last3=Jain |first3=Sudhir R |title=Nucleon-Nucleon t-matrix Effective Interaction for (p, 2p)Reactions |journal=Journal of Physics: Conference Series |date=19 July 2012 |volume=374 |issue=1 |article-number=012009 |doi=10.1088/1742-6596/374/1/012009 |bibcode=2012JPhCS.374a2009J |language=en |issn=1742-6596|doi-access=free }}</ref> [[semiclassical physics]],<ref>{{cite journal |last1=Brack |first1=Matthias |last2=Jain |first2=Sudhir R. |title=Analytical tests of Gutzwiller's trace formula for harmonic-oscillator potentials |journal=Physical Review A |date=1 May 1995 |volume=51 |issue=5 |pages=3462–3468 |doi=10.1103/PhysRevA.51.3462 |pmid=9912006 |bibcode=1995PhRvA..51.3462B }}</ref> and [[nonlinear dynamics]].<ref>{{cite journal |last1=Sonone |first1=Rupali L. |last2=Jain |first2=Sudhir R. |title=Nonlinear normal modes and quanta in the β Fermi-Pasta-Ulam lattice |journal=The European Physical Journal Special Topics |date=1 July 2013 |volume=222 |issue=3 |pages=601–608 |doi=10.1140/epjst/e2013-01865-4 |bibcode=2013EPJST.222..601S |s2cid=122034973 |language=en |issn=1951-6401}}</ref>

He is known for his work on many-body systems, especially for Jain-Khare models<ref name=":0">{{cite journal|last1=Yadav|first1=Rajesh K.|last2=Khare|first2=Avanish|last3=Kumari|first3=Nisha|last4=Bhabani|first4=Mandal P.|date=January 2019|title=Rationally extended many-body truncated Calogero–Sutherland model|journal=Annals of Physics|language=en|volume=400|issue=3|pages=189–197|doi=10.1016/j.aop.2018.11.009|arxiv=1807.05163|bibcode=2019AnPhy.400..189Y|s2cid=119290030}}</ref><ref>{{Cite journal|last1=Jain|first1=Sudhir R.|last2=Khare|first2=Avinash|date=1999-10-25|title=An exactly solvable many-body problem in one dimension and the short-range Dyson model|url=http://www.sciencedirect.com/science/article/pii/S0375960199006374|journal=Physics Letters A|language=en|volume=262|issue=1|pages=35–39|doi=10.1016/S0375-9601(99)00637-4|issn=0375-9601|arxiv=cond-mat/9904121|bibcode=1999PhLA..262...35J|s2cid=119331884}}</ref><ref>{{Cite book|last1=Auberson|first1=G.|url=https://cds.cern.ch/record/413007|title=Off-diagonal long-range order in one-dimensional many-body problem|last2=Jain|first2=S. R.|last3=Khare|first3=A.|date=1999}}</ref> which gave exact quantum solutions with connections to random matrix theory, leading to exact eigenfunctions for a class of [[Quantum chaos|chaotic systems]]. The bosonised version of the Jain-Khare model exhibits [[Bose–Einstein condensate|Bose Einstein condensation]].<ref name=":0" />

His notable works include his work on Pseudo Hermitian Random Matrix theory,<ref>''Pseudo-Hermitian random matrix theory'', S. C. L. Srivastava, Sudhir R. Jain, Fortchritte der Physik 61, 276 (2013)</ref> relation of Random Matrix theory to anyon gases,<ref>''From random matrix theory to statistical mechanics - anyon gas'', D. Alonso and Sudhir R. Jain, Phys. Lett. B387, 812 (1996)</ref> theorems and statistics for integrable billiards and nodal domains,<ref>A nodal domain theorem for integrable billiards in two dimensions, Rhine Samajdar and Sudhir R. Jain, Ann. Phys. 351, 1 (2014)</ref><ref>Nodal portraits of quantum billiards: Domains, lines, and statistics, Sudhir R. Jain and Rhine Samajdar, Rev. Mod. Phys. 89, 045005 (2017).</ref><ref>Grémaud, Benoît, and Sudhir R. Jain. ''Spacing distributions for rhombus billiards.'' Journal of Physics A: Mathematical and General 31.37 (1998): L637.</ref> quantum modes built on chaotic motion,<ref>''Quantum modes built on chaotic motion - analytically exact results'', Sudhir R. Jain, B. Gremaud, A. Khare, Phys. Rev. E 66, 016216 (2002).</ref> [[Poincaré recurrence theorem]] in Kac's ring.<ref>Kac's ring: entropy and Poincare recurrence, C. Aravind and Sudhir R. Jain, Physica A 391, 3702 (2012).</ref> His work in [[neutrino]] physics pioneered in calculation of geometric phases in [[neutrino]]s.<ref>''Geometric phase for neutrino propagation in magnetic field'', Sandeep Joshi and Sudhir R. Jain, Phys. Lett. B 754, 135 (2016)</ref><ref>''Noncyclic geometric phases and helicity transitions for neutrino oscillations in magnetic field'',Sandeep Joshi and Sudhir R. Jain, Phys. Rev. D 96, 096004 (2017).</ref>

Among other contributions, Jain made significant developments towards the exact semiclassical treatment of [[deuteron]]<ref>''Semiclassical deuteron'', Sudhir R. Jain, J. Phys. G 30, 157 (2004).</ref> which he further extended to nuclear three body problem of [[Tritium|triton]].<ref>''Semiclassical triton'', Nishchal R. Dwivedi, Harjeet Kaur, and Sudhir R. Jain, Eur. Phys. J. A 54, 49 (2018)</ref> He developed an exact semiclassical trace formula to calculate level densities of spherical nuclei with no adjustable parameters.<ref>''Semiclassical theory of melting of shell effects in nuclei with temperature'', Harjeet Kaur and Sudhir R. Jain, J. Phys. G 42, 115103 (2015)</ref>

He has also worked on [[quantum computation]] and [[quantum information]] science. In particular, his work with his collaborators has led to an understanding of controlling [[quantum jump]] by realising "Dehmelt-like" shelving by employing [[quantum Zeno effect]].<ref>Komal Kumari, Garima Rajpoot, Sandeep Joshi, S. R. Jain, Ann. Phys. 450, 169222 (2023))</ref> His work has contributed a non-topological code with highest encoding rate <ref>{{cite arXiv | eprint=2211.12695 | last1=Kumari | first1=Komal | last2=Rajpoot | first2=Garima | author3=Sudhir Ranjan Jain | title=A Genus-two Surface Code | year=2022 | class=quant-ph }}</ref> and established protection of [[qubits]] using ideas from classical and quantum nonlinear science <ref>''Protection of qubits by nonlinear resonances'', Rakesh K. Saini, Raman Sehgal, and Sudhir R. Jain, Eur. Phys. Journal Plus 137, 356 (2022)</ref><ref>{{cite journal | doi=10.1142/S0219749921500325 | title=The tunable 0−π qubit: Dynamics and relaxation | year=2022 | last1=Rajpoot | first1=Garima | last2=Kumari | first2=Komal | last3=Joshi | first3=Sandeep | last4=Jain | first4=Sudhir R. | journal=International Journal of Quantum Information | volume=20 | issue=1 | article-number=2150032 | arxiv=2211.09333 | bibcode=2022IJQI...2050032R | s2cid=244298082 }}</ref><ref>Green-Kubo formula for electrical conductivity of a driven 0-π qubit, Garima Rajpoot, Komal Kumari, Sandeep Joshi, and Sudhir R. Jain, Theor. & Math. Phys. 213, 1727 (2022)</ref>

He was scientific secretary of the XXth [[Solvay Conference]] on [[Femtochemistry]].<ref>Page xi, ''Chemical Reactions and their Control on the Femtosecond Time Scale: XXth Solvay Conference on Chemistry''. Vol. 220. John Wiley & Sons</ref> He was also the convenor of International conference on complex quantum systems in 2017,<ref>{{Cite web|url=http://sympnp.org/iccqs/|title=ICCQS- International Conference of Complex Quantum Systems, Mumbai 2017}}</ref> 2020 and 2023.<ref>{{cite web |url=http://iccqs.sympnp.org/ |title=Home |website=iccqs.sympnp.org}}</ref>

==Awards==
*[[Indian National Science Academy|INSA]] medal for young scientists (1994)<ref>{{Cite web|url=http://insaindia.res.in/youngmedal.php|title=Insa :: Awards Recipients|access-date=7 May 2020|archive-date=11 May 2021|archive-url=https://web.archive.org/web/20210511084357/https://www.insaindia.res.in/youngmedal.php}}</ref>
*Anil Kumar Bose Memorial Award, 1999 (1999) for his work relating to ''geometric phases and response functions''.<ref>{{Cite web| title=BARC scientists honoured | url=http://www.barc.gov.in/publications/nl/1999/199911-11.pdf | archive-url=https://web.archive.org/web/20101226181921/http://barc.gov.in/publications/nl/1999/199911-11.pdf | archive-date=2010-12-26}}</ref>

==References==
{{reflist}}

{{authority control}}

{{DEFAULTSORT:Jain, Sudhir Ranjan}}
[[Category:1963 births]]
[[Category:Living people]]
[[Category:Delhi University alumni]]
[[Category:IIT Delhi alumni]]
[[Category:University of Mumbai alumni]]
[[Category:Indian theoretical physicists]]

Sudhir Ranjan Jain - Revision history

Kvora3: info