Egor Babaev
{{Short description|Russian-born Swedish physicist}}
{{Use dmy dates|date=October 2021}}
{{Infobox scientist
| name = Egor Babaev
| image =
| image_size =
| caption = Egor Babaev
| birth_place = Leningrad, Russian SFSR
| birth_date = {{birth date and age|1973|07|08}}{{Cite web |url=https://gustafssonsstiftelser.se/pristagare-2015-egor-babaev/ |title=Egor Babaev |access-date=19 October 2021 |archive-date=20 October 2021 |archive-url=https://web.archive.org/web/20211020102206/https://gustafssonsstiftelser.se/pristagare-2015-egor-babaev/ |url-status=live }}
| field = Physics, condensed matter theory Superconductivity
| work_institutions = KTH Royal Institute of Technology, University of Massachusetts Amherst
| alma_mater = Uppsala University
| doctoral_advisor =
| academic_advisors = Neil Ashcroft, Ludwig Faddeev, Antti Niemi
| doctoral_students =
| notable_students =
| prizes = Tage Erlander Prize, Goran Gustafsson Prize, Fellow of the American Physical Society
| footnotes =
}}
Egor Babaev (born 1973) is a Russian-born Swedish physicist. In 2001, he received his PhD in theoretical physics from Uppsala University (Sweden). In 2006 he joined the faculty of the KTH Royal Institute of Technology in Stockholm. In 2007-2013 he shared this position with a faculty appointment at Physics Department of the University of Massachusetts, Amherst (USA). He is currently full professor at the Physics Department KTH Royal Institute of Technology.{{Cite web|url=http://www.theophys.kth.se/~egor/|title=egor babaev's home page|website=www.theophys.kth.se|access-date=30 September 2018|archive-date=12 May 2021|archive-url=https://web.archive.org/web/20210512171038/http://www.theophys.kth.se/~egor/|url-status=dead}}
History
He received multiple awards in recognition of his research on superconductivity and superfluidity. His results, obtained with several collaborators and students, include a theory of new types of superconducting states in multicomponent systems Type-1.5 superconductivity,{{Cite web|url=https://www.crcpress.com/Superfluid-States-of-Matter/Svistunov-Babaev-Prokofev/p/book/9781439802755|title=Superfluid States of Matter|date=15 April 2015|website=CRC Press|access-date=30 September 2018|archive-date=1 March 2020|archive-url=https://web.archive.org/web/20200301082458/https://www.crcpress.com/Superfluid-States-of-Matter/Svistunov-Babaev-Prokofev/p/book/9781439802755|url-status=live}}{{Cite journal|last1=Babaev|first1=Egor|last2=Speight|first2=Martin|date=17 November 2005|title=Semi-Meissner state and neither type-I nor type-II superconductivity in multicomponent superconductors|journal=Physical Review B|volume=72|issue=18|pages=180502|doi=10.1103/PhysRevB.72.180502|arxiv=cond-mat/0411681|bibcode=2005PhRvB..72r0502B|s2cid=118146361}}{{Cite news|url=https://phys.org/news/2011-10-physicists-unveil-theory-kind-superconductivity.html|title=Physicists unveil a theory for a new kind of superconductivity|access-date=30 September 2018|archive-date=30 September 2018|archive-url=https://web.archive.org/web/20180930231500/https://phys.org/news/2011-10-physicists-unveil-theory-kind-superconductivity.html|url-status=live}}(reviewed in{{Cite journal|date=15 February 2017|title=Type-1.5 superconductivity in multicomponent systems|journal=Physica C: Superconductivity and Its Applications|volume=533|pages=20–35|doi=10.1016/j.physc.2016.08.003|issn=0921-4534|last1=Babaev|first1=E.|last2=Carlström|first2=J.|last3=Silaev|first3=M.|last4=Speight|first4=J.M.|arxiv=1608.02211|bibcode=2017PhyC..533...20B|s2cid=59580432}}) theory of metallic and superconducting superfluids{{Cite journal|last1=Babaev|first1=Egor|last2=Sudbø|first2=Asle|last3=Ashcroft|first3=N. W.|date=7 October 2004|title=A superconductor to superfluid phase transition in liquid metallic hydrogen|journal=Nature|volume=431|issue=7009|pages=666–668|doi=10.1038/nature02910|pmid=15470422|issn=0028-0836|arxiv=cond-mat/0410408|bibcode=2004Natur.431..666B|s2cid=4414631}} and inter-component pairing induced by thermal fluctuation in multicomponent systems (reviewed in{{Cite web|url=https://www.crcpress.com/Superfluid-States-of-Matter/Svistunov-Babaev-Prokofev/p/book/9781439802755|title=Superfluid States of Matter|date=15 April 2015|website=CRC Press|access-date=30 September 2018|archive-date=1 March 2020|archive-url=https://web.archive.org/web/20200301082458/https://www.crcpress.com/Superfluid-States-of-Matter/Svistunov-Babaev-Prokofev/p/book/9781439802755|url-status=live}}), prediction, often referred as Babaev-Faddeev-Niemi hypothesis{{Cite web|url=http://gow.epsrc.ac.uk/NGBOViewGrant.aspx?GrantRef=EP/G009678/1|title=Grants on the web|access-date=30 September 2018|archive-date=30 September 2018|archive-url=https://web.archive.org/web/20180930231434/http://gow.epsrc.ac.uk/NGBOViewGrant.aspx?GrantRef=EP/G009678/1|url-status=live}} of unconventional excitations in superconducting state: knotted solitons{{Cite journal|last1=Babaev|first1=Egor|last2=Faddeev|first2=Ludvig D.|last3=Niemi|first3=Antti J.|date=27 February 2002|title=Hidden symmetry and knot solitons in a charged two-condensate Bose system|journal=Physical Review B|volume=65|issue=10|pages=100512|doi=10.1103/PhysRevB.65.100512|arxiv=cond-mat/0106152|bibcode=2002PhRvB..65j0512B|s2cid=118910995}} also dubbed as Hopfions.
He is actively engaged in science communication to general public.{{Cite news|url=https://www.science.org/content/article/new-type-superconductivity-spotted|title=New Type of Superconductivity Spotted|date=13 March 2009|work=Science {{!}} AAAS|access-date=30 September 2018|archive-date=2 May 2024|archive-url=https://web.archive.org/web/20240502203421/https://www.science.org/content/article/new-type-superconductivity-spotted|url-status=live}}{{Cite news|url=https://phys.org/news/2011-10-physicists-unveil-theory-kind-superconductivity.html|title=Physicists unveil a theory for a new kind of superconductivity|access-date=30 September 2018|archive-date=30 September 2018|archive-url=https://web.archive.org/web/20180930231500/https://phys.org/news/2011-10-physicists-unveil-theory-kind-superconductivity.html|url-status=live}}{{Cite news|url=https://www.svd.se/varning-ny-superdator-kan-roja-alla-hemligheter|title=Varning: Ny superdator kan röja alla hemligheter (SvD Premium) {{!}} SvD|last=hakan.johansson@svd.se|first=Håkan Johansson {{!}}|work=SvD.se|access-date=30 September 2018|language=sv|archive-date=30 September 2018|archive-url=https://web.archive.org/web/20180930231959/https://www.svd.se/varning-ny-superdator-kan-roja-alla-hemligheter|url-status=live}} Currently he is serving as the co-organiser and chair of the selection committee of the Lise Meitner Distinguished Lecture, the general audience lecture taking place at AlbaNova University Center in Stockholm on annual basis. He coauthored the textbook on modern theory of superfluidity with Boris Svistunov and Nikolay Prokof'ev.{{Cite web|url=https://www.crcpress.com/Superfluid-States-of-Matter/Svistunov-Babaev-Prokofev/p/book/9781439802755|title=Superfluid States of Matter|date=15 April 2015|website=CRC Press|language=en|access-date=30 September 2018|archive-date=1 March 2020|archive-url=https://web.archive.org/web/20200301082458/https://www.crcpress.com/Superfluid-States-of-Matter/Svistunov-Babaev-Prokofev/p/book/9781439802755|url-status=live}}
In 2021, Babaev and collaborators published evidence of a "quartic metal", an exotic phase of low-temperature matter that exhibits the breaking of time-reversal symmetry.{{Cite journal|last1=Grinenko|first1=Vadim|last2=Weston|first2=Daniel|last3=Caglieris|first3=Federico|last4=Wuttke|first4=Christoph|last5=Hess|first5=Christian|last6=Gottschall|first6=Tino|last7=Maccari|first7=Ilaria|last8=Gorbunov|first8=Denis|last9=Zherlitsyn|first9=Sergei|last10=Wosnitza|first10=Jochen|last11=Rydh|first11=Andreas|last12=Kihou|first12=Kunihiro|last13=Lee|first13=Chul-Ho|last14=Sarkar|first14=Rajib|last15=Dengre|first15=Shanu|last16=Garaud|first16=Julien|last17=Charnukha|first17=Aliaksei|last18=Hühne|first18=Ruben|last19=Nielsch|first19=Kornelius|last20=Büchner|first20=Bernd|last21=Klauss|first21=Hans-Henning|last22=Babaev|first22=Egor|author-link22=Egor Babaev|date=18 October 2021|title=State with spontaneously broken time-reversal symmetry above the superconducting phase transition|url=https://www.nature.com/articles/s41567-021-01350-9|journal=Nature Physics|volume=17|issue=11|language=en|pages=1254–1259|arxiv=2103.17190|bibcode=2021arXiv210317190G|doi=10.1038/s41567-021-01350-9|s2cid=235732434|issn=1745-2481|access-date=2 May 2024|archive-date=21 July 2023|archive-url=https://web.archive.org/web/20230721030105/https://www.nature.com/articles/s41567-021-01350-9|url-status=live}}
Awards
Göran Gustafsson Prize in Physics from the Royal Swedish Academy of Sciences "For original theoretical research which has already shown new ways to understand complex systems and processes in materials physics"{{Cite web|url=https://6702d.https.cdn.softlayer.net/laureate/globalassets-priser-gustafsson-2015-popvet_ggustafsson_2015.pdf|title=Press release of the Royal Swedish Academy of Science|access-date=29 September 2018|archive-date=30 September 2018|archive-url=https://web.archive.org/web/20180930231530/https://6702d.https.cdn.softlayer.net/laureate/globalassets-priser-gustafsson-2015-popvet_ggustafsson_2015.pdf|url-status=live}}{{Cite web|url=https://kva.screen9.tv/media/vuWFxkMn5WaVV7-zVZHysQ/goran-gustafssonpriset-i-fysik-2015-a-new-type-of-superconductors|title=Video of the presentation|access-date=29 September 2018|archive-date=30 September 2018|archive-url=https://web.archive.org/web/20180930231322/https://kva.screen9.tv/media/vuWFxkMn5WaVV7-zVZHysQ/goran-gustafssonpriset-i-fysik-2015-a-new-type-of-superconductors|url-status=live}}
American Physical Society Fellow "For pioneering contributions to the theory of multicomponent superconductors and superfluids"[https://www.aps.org/programs/honors/fellowships/archive-all.cfm]
Tage Erlander prize in Physics of the Royal Swedish Academy of Sciences "For groundbreaking theoretical work that predicts new states of matter in the form of quantum fluids with novel properties"{{Cite web|url=https://www.kva.se/sv/nyheter/priser-och-beloningar-under-hogtidsdagen-31-mars-2010|title=News release of the Royal Swedish Academy of Science|access-date=29 September 2018|archive-date=16 January 2021|archive-url=https://web.archive.org/web/20210116045107/https://www.kva.se/sv/nyheter/priser-och-beloningar-under-hogtidsdagen-31-mars-2010|url-status=dead}}
Outstanding Young Researcher Award from Swedish Research Council
US National Science Foundation CAREER Award
References
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Category:Academic staff of the KTH Royal Institute of Technology
Category:Fellows of the American Physical Society
Category:21st-century Swedish physicists
Category:Uppsala University alumni