Anthony James Leggett

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Sir

Anthony Leggett

HonFInstP
Leggett in 2007
Born
Anthony James Leggett

(1938-03-26) 26 March 1938 (age 86)[4]
Camberwell, London, England
CitizenshipBritish and American
Alma materUniversity of Oxford (BA, DPhil)
Known for
Spouse
Haruko Kinase
​
(m. 1972)​
Awards
Scientific career
FieldsPhysics
Institutions
Thesis (1964)
Doctoral advisorDirk ter Haar[2]
Doctoral students

Sir Anthony James Leggett

superfluidity was recognised by the 2003 Nobel Prize in Physics.[6] He has shaped the theoretical understanding of normal and superfluid helium liquids and strongly coupled superfluids.[7] He set directions for research in the quantum physics of macroscopic dissipative systems and use of condensed systems to test the foundations of quantum mechanics.[8][9]

Early life and education

Leggett was born in

domestic service
at the age of twelve. She eventually married his grandfather and raised a large family, then in her late sixties emigrated to Australia to join her daughter and son-in-law, and finally returned to the UK for her last years.

His father and mother were each the first in their families to receive a university education; they met and became engaged while students at the Institute of Education at the

Catholic in his early twenties.[10]

Soon after he was born, his parents bought a house in

11-plus, which he took rather earlier than most, and then transferred to Wimbledon College. [citation needed
]

He later attended Beaumont College, a Jesuit school in Old Windsor. He and his two younger brothers, Terrence and Paul, attended Beaumont as a consequence of his father's appointment to teach science at the college. While there, Leggett primarily studied classics, since that was generally regarded as the most prestigious field at the time; this study led directly to his

Greats
degree while at Oxford. Despite Leggett's emphasis on classics at Beaumont, his father ran an evening 'science club' for his younger son and a couple of others. In his last year at Beaumont, Leggett won every single prize for the subjects that he studied that year.

Leggett won a scholarship to

Literae Humaniores (classics). After completing his first degree he began a second undergraduate degree, this time in physics at Merton College, Oxford.[11] One person who was willing to overlook Leggett's unorthodox credentials was Dirk ter Haar, then a reader in theoretical physics and a fellow of Magdalen College, Oxford
; so Leggett signed up for research under ter Haar's supervision. As with all of ter Haar's students in that period, the tentatively assigned thesis topic was "Some Problems in the Theory of Many-Body Systems", which left a considerable degree of latitude.

Dirk took a great interest in the personal welfare of his students and their families, and was meticulous in making sure they received adequate support; indeed, he encouraged Leggett to apply for a Prize Fellowship at Magdalen, which he held from 1963 to 1967. In the end Leggett's thesis consisted of studies of two somewhat disconnected problems in the general area of liquid

superfluid 4He and the other on the properties of dilute solutions of 4He in normal liquid 3He (a system which unfortunately turned out to be much less experimentally accessible than the other side of the phase diagram, dilute solutions of 3He in 4He). The University of Oxford awarded Leggett an Honorary DLitt in June 2005.[citation needed
]

Career

Leggett spent the period August 1964 – August 1965 as a

postdoctoral research fellow at UIUC, and David Pines and his colleagues (John Bardeen, Gordon Baym, Leo Kadanoff
and others) provided a fertile environment. He then spent a year in the group of Professor Takeo Matsubara at Kyoto University in Japan.

After one more postdoctoral year which he spent in "roving" mode, spending time at Oxford, Harvard, and Illinois, in the autumn of 1967 he took up a lectureship at the University of Sussex, where he was to spend the majority of the next fifteen years of his career. During the mid 1970s, he spent considerable time in Japan at the University of Tokyo and also at Kwame Nkrumah University of Science and Technology in Kumasi, Ghana.

In early 1982 he accepted an offer from UIUC of the MacArthur Chair with which the university had recently been endowed. As he had already committed himself to an eight-month stay as a visiting scientist at Cornell in early 1983,[12] he finally arrived in Urbana in the early fall of that year, and has been there ever since.

Leggett's own research interests shifted away from superfluid 3He since around 1980; he worked inter alia on the low-temperature properties of glasses, high-temperature superconductivity, the Bose–Einstein condensate (BEC) atomic gases and above all on the theory of experiments to test whether the formation of quantum mechanics will continue to describe the physical world as we push it up from the atomic level towards that of everyday life.

From 2006 to 2016, he also held a position at the Institute for Quantum Computing in Waterloo, Canada.

As of April 2023, he serves as chief scientist at the Institute for Condensed Matter Theory, a research institute at the UIUC.

In 2013, he became the founding director of the Shanghai Center for Complex Physics.[13]

Research

His research focuses on cuprate

topological quantum computation
.

The edition of 29 December 2005 of the

Norman Ramsey of Harvard University.[14] Both debated the worth of attempts to change quantum theory. Leggett thought attempts were justified, Ramsey opposed. Leggett believes quantum mechanics may be incomplete because of the quantum measurement problem
.

Awards and honours

Leggett is a member of the

Fellow of the Royal Society (FRS) in 1980,[1] the American Physical Society, and American Institute of Physics, and Life Fellow of the Institute of Physics
.

He was awarded the 2003 Nobel Prize in Physics (with

Queen's Birthday Honours "for services to physics".[15] He also won the 2002/2003 Wolf Foundation Prize for research on condensed forms of matter (with B. I. Halperin
). He was also honoured with the Eugene Feenberg Memorial Medal (1999). He has been elected as a Foreign Fellow of the Indian National Science Academy (2011).

Personal life

In June 1973, he married Haruko Kinase. They met at Sussex University, in Brighton, England. In 1978, they had a daughter Asako.[10] His wife Haruko earned a PhD[10] in cultural anthropology from UIUC and has done research on the hospice system.[10] Their daughter, Asako, also graduated from UIUC with a joint major in geography and chemistry. She holds dual US/UK citizenship.[10]

See also

References

  1. ^ a b c "Fellows of the Royal Society". London: Royal Society. Archived from the original on 16 March 2015.
  2. ^ a b Anthony James Leggett at the Mathematics Genealogy Project
  3. ISBN 978-8578791261
    .
  4. ^ "LEGGETT, Sir Anthony (James)". Who's Who. Vol. 2015 (online Oxford University Press ed.). A & C Black. (Subscription or UK public library membership required.)
  5. ^ "Anthony Leggett UIUC Faculty page".
  6. ^ "Nobel Prize in Physics 2003".
  7. doi:10.1103/RevModPhys.47.331
    .
  8. doi:10.1016/0003-4916(83)90202-6. Archived from the original
    (PDF) on 8 July 2010.
  9. ^ "The Problems of Physics – A conversation with Tony Leggett" Archived 15 September 2019 at the Wayback Machine, Ideas Roadshow, 2013
  10. ^ a b c d e f g "Anthony J. Leggett – Autobiography".
  11. ^ Levens, R.G.C., ed. (1964). Merton College Register 1900–1964. Oxford: Basil Blackwell. p. 511.
  12. ^ "Energy Programs | Principal Investigators".
  13. ^ "上海复杂物理研究中心". Archived from the original on 13 June 2020. Retrieved 15 January 2018.
  14. ^ "New tests of Einstein's 'spooky' reality"
  15. ^ "No. 57315". The London Gazette (Supplement). 12 June 2004. p. 23.

External links

  • Anthony J. Leggett on Nobelprize.org Edit this at Wikidata including the Nobel Lecture Superfluid 3-He: The Early Days as Seen by a Theorist

Quotations related to Anthony James Leggett at Wikiquote

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