{{Short description|Georgian theoretical physicist (born 1940)}}

{{Infobox scientist | name = Juansher (Jon) Chkareuli | image = Juansher Chkareuli.png | birth_date = {{birth date and age|January 13, 1940}} | birth_place = Tbilisi, Georgia, USSR | death_date = | death_place = | field = Theoretical particle physics | alma_mater = Tbilisi State University | doctoral_advisors = Sergei Matinyan <br />Victor Ogievetsky | doctoral_students = Giorgi Dvali | work_institution = Andronikashvili Institute of Physics, Tbilisi State University & <br /> Institute of Theoretical Physics, Ilia State University | known_for = Family symmetries, extended grand unified theories, emergent gauge and gravity theories }} '''Juansher Chkareuli''' ({{lang-ka|ჯუანშერ ჩქარეული}}; born January 13, 1940) is a Georgian theoretical physicist working in particle physics, Head of Particle Physics Department at Andronikashvili Institute of Physics of Tbilisi State University and Professor at Institute of Theoretical Physics of Ilia State University in Tbilisi.<ref>{{cite book|title=Juansher (John) Levan Chkareuli (Article) |publisher=[WorldCat.org] |date=2019-01-04 |oclc=4780133409 }}</ref><ref>{{cite web |url=https://www.researchgate.net/profile/JL_Chkareuli |title=Profile: J.L. Chkareuli |website=ResearchGate}}</ref>

==Academic career==

He studied at Tbilisi State University and Lebedev Physical Institute (Moscow), and received MSc in Theoretical Physics in 1965. He completed his PhD in 1970 and DSc in 1985 in Andronikashvili Institute of Physics (Tbilisi) and Joint Institute for Nuclear Research (Russia).

Subsequently, he worked as Principal Research Fellow at Andronikashvili Institute of Physics (1985–present); Professor of Theoretical Physics at Tbilisi State University (1986-1990); Professor of Theoretical Physics at Ilia State University (2006–present).

In 1991-2012 he was also a Visiting research professor at many leading centers in high energy physics including European Organization for Nuclear Research (CERN) in Geneva, International Center for Theoretical Physics (ICTP) in Trieste, Max-Planck Institute in Munich, University of Glasgow, University of Maryland, University of Melbourne, Institute of High Energy Physics in Beijing .

J.L. Chkareuli is primarily known for his works on family symmetries, extended Grand Unified Theories and emergent gauge and gravity theories. These developments include: An introduction of the chiral family symmetry SU(3) for quark-lepton generations<ref>{{cite journal|last1=Chkareuli|first1=J. L.|title=Quark-lepton families: from SU(5) to SU(8) symmetry|journal=Soviet Journal of Experimental and Theoretical Physics Letters|date=December 1980|volume=32|issue=11|bibcode=1980JETPL..32..671C|pages=671–674|url=http://jetpletters.ac.ru/ps/1434/article_22003.pdf|issn=0021-3640|access-date=2017-05-17|archive-date=2018-12-20|archive-url=https://web.archive.org/web/20181220230425/http://jetpletters.ac.ru/ps/1434/article_22003.pdf}} DESY-L-TRANS-253.</ref> and its application to the flavor mixing of quarks and leptons;<ref>{{cite journal|author1=Berezhiani, Z.G.|author2=Chkareuli, J.L.|title=Quark-Lepton Families in a Model with SU(5)⊗SU(3) Symmetry|journal=Sov. J. Nucl. Phys|volume=37|issue=4|date=April 1983|page=618}}</ref><ref>{{cite journal|last1=Berezhiani|first1=Z.G.|title=The weak mixing angles in gauge models with horizontal symmetry — A new approach to quark and lepton masses|journal=Physics Letters B|date=September 1983|volume=129|issue=1–2|pages=99–102|doi=10.1016/0370-2693(83)90737-2|bibcode=1983PhLB..129...99B}}</ref><ref>{{cite book|last1=Khlopov|first1=Maxim Yu|title=Cosmoparticle Physics|date=1999|publisher=World Scientific|location=Singapore|isbn=981-02-3188-1|page=577}}</ref><ref>{{cite journal|last1=King|first1=S.F.|last2=Ross|first2=G.G.|title=Fermion masses and mixing angles from SU(3) family symmetry|journal=Physics Letters B|date=November 2001|volume=520|issue=3–4|pages=243–253|doi=10.1016/S0370-2693(01)01139-X|arxiv=hep-ph/0108112|bibcode=2001PhLB..520..243K|s2cid=6510221}} {{open access}}</ref><ref>{{cite journal|last1=Appelquist|first1=Thomas|last2=Bai|first2=Yang|last3=Piai|first3=Maurizio|title=Breaking discrete symmetries in broken gauge theories|journal=Physical Review D|date=August 2005|volume=72|issue=3|article-number=036005|doi=10.1103/PhysRevD.72.036005|arxiv=hep-ph/0506137|bibcode=2005PhRvD..72c6005A|s2cid=119330778}}</ref> A novel missing VEV mechanism in the supersymmetric SU(8) Grand Unified Theory suggesting a simultaneous solution to the gauge hierarchy problem and unification of flavor;<ref>{{cite journal|last1=Chkareuli|first1=J.L.|last2=Gogoladze|first2=I.G.|last3=Kobakhidze|first3=A.B.|title=SU(N) supersymmetric grand unified theories: Natural projection to low-energies|journal=Physical Review Letters|date=February 1998|volume=80|issue=5|pages=912–915|doi=10.1103/PhysRevLett.80.912|bibcode= 1998PhRvL..80..912C}}</ref><ref>J.L. Chkareuli, "SU(N) SUSY GUTS with string remnants: minimal SU(5) and beyond", Invited talk given at the 29th International Conference on High Energy Physics (ICHEP '98), Vancouver, 23–29 July 1998; {{citation|title=Proceedings of ICHEP '98|date=1999|publisher=World Scientific|location=Singapore|isbn=981-02-3772-3|pages=1669–1673|doi=10.1142/9789812818096|arxiv=hep-ph/9809464|last1=Chkareuli|first1=J. L.}}</ref> New nonlinear sigma models for emergent gauge and gravity theories leading to dynamical generation of local internal and spacetime symmetries with gauge fields and gravitons as massless vector/tensor Goldstone bosons.<ref>{{cite journal|last1=Chkareuli|first1=J.L.|last2=Froggatt|first2=C.D.|last3=Nielsen|first3=H.B.|title=Lorentz invariance and origin of symmetries|journal=Physical Review Letters|date=August 2001|volume=87|issue=6|article-number=091601|doi=10.1103/PhysRevLett.87.091601 |pmid=11531559|arxiv=hep-ph/0106036|bibcode=2001PhRvL..87i1601C|s2cid=18464992}}</ref><ref>{{cite journal|last1=Visser|first1=Matt|title=Lorentz symmetry as a quantum field theory regulator|journal=Physical Review D|date=July 2009 |volume=80|issue=3–4|article-number=025011|doi=10.1103/PhysRevD.80.025011|bibcode =2009PhRvD..80b5011V|arxiv=0902.0590|s2cid=2585130}}</ref><ref>{{cite journal|last1=Sindoni|first1=Lorenzo|title=Emergent models for gravity: An overview of microscopic models|journal=SIGMA|date=May 2012 |volume=8|issue=1|page=027|doi=10.3842/SIGMA.2012.027|bibcode =2012SIGMA...8..027S|arxiv=1110.0686|s2cid=16682347}}</ref><ref>{{cite book|last1=Sundermeyer|first1=Kurt|title=Symmetries in fundamental physics|date=2014|publisher=Springer |location=Cham, Switzerland|doi=10.1007/978-94-007-7642-5|isbn=978-94-007-7641-8|page=763|url=https://cds.cern.ch/record/1642309}}</ref><ref>{{cite journal|last1=Chkareuli|first1=J.L.|title=On the origin of Poincare gauge gravity|journal=Physics Letters B|date=April 2017|volume=769|issue=3–4|pages=377–384|doi=10.1016/j.physletb.2017.04.012|bibcode= 2017PhLB..769..377C|url=http://inspirehep.net/record/1592192/files/scoap3-fulltext.pdf|doi-access=free}}</ref>

He is also known as President of the Georgian Physical Society (1993–99), and an organizer and co-organizer of some notable conferences and workshops on high energy physics – Annual Georgian Winter School on particle physics and cosmology (Bakuriani, Georgia, 1970–1993)<ref>{{cite web|url=http://inspirehep.net/record/968216?ln=en.|title=Inspire}}</ref> which was one of the most popular scientific meetings in the former Soviet Union; International seminar "Standard Model and Beyond" (Tbilisi, 1996);<ref>{{cite web|url=http://inspirehep.net/record/970866?ln=en.|title=Inspire}}</ref> International conference "Low dimensional physics and gauge principles" (Yerevan & Tbilisi, 2011) <ref>{{cite web|url=http://inspirehep.net/record/1220831 |title=Inspire |publisher=Inspirehep.net |date= |access-date=2022-06-03}}</ref><ref>{{cite web|url=http://crd.yerphi.am/Conferences/lowdim2011/home |title=Home |publisher=Crd.yerphi.am |date= |access-date=2022-06-03}}</ref> and others.

==Honours and awards== Royal Society Fellowship (1993–94); Royal Society Joint Project Grant (1999-2000), Georgia-US Bilateral Grant (2003-2005); Member of the American Physical Society (1993), Fellow of the Institute of Physics (UK, 2000). Listed in the biographical dictionaries including «Who is Who in Science and Engineering» (2008), Marquis Who's Who, NY; «2000 Outstanding Scientists 2008/2009» (2010), International Biographical Centre, Cambridge.

==References== {{reflist}}

==External links== * [http://cepp.iliauni.edu.ge/members/j.chkareuli.php J.L. Chkareuli at Center for Elementary Particle Physics], Ilia State University * [http://www.aiphysics.tsu.ge/particl/particl-e.html J.L. Chkareuli at Andronikashvili Institute of Physics], Tbilisi State University * [http://inspirehep.net/search?ln=en&ln=en&p=f+a+chkareuli%2C+j Scientific publications of J.L. Chkareuli] on INSPIRE-HEP * [https://scholar.google.com/citations?user=jnOfuMQAAAAJ&hl=en&authuser=1 J.L. Chkareuli] on Google Scholar {{Authority control}}

{{DEFAULTSORT:Chkareuli, Juansher}} Category:1940 births Category:Living people Category:Scientists from Tbilisi Category:Physicists from Georgia (country) Category:Theoretical physicists Category:Particle physicists Category:People associated with CERN