Ian Affleck

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Ian Affleck (born July 2, 1952 in Vancouver ) is a Canadian theoretical physicist.

life and work

Affleck studied at Trent University in Peterborough (Ontario) ( bachelor's degree 1975) and Harvard University , where he received his master's degree in 1976 and his doctorate in 1979 with Sidney Coleman . From 1979 to 1981 he was a Junior Fellow at Harvard. 1981 to 1987 he was an assistant professor at Princeton University , interrupted by a stay at the nuclear research center in Saclay in 1984/85. He has been a professor at the University of British Columbia since 1987 .

Affleck began in the early 1980s with work in elementary particle physics and quantum field theory , for example he investigated the role of instantons in various quantum field theories. With Michael Dine and others he wrote early papers on dynamic breaking of supersymmetry and developed the Affleck-Dine mechanism for baryogenesis . He later turned to solid state physics , where he applied quantum field theoretical methods from elementary particle physics, such as conformal field theories , the concept of local gauge invariance or non- Abelian bosonization . In solid-state physics, he dealt with high-temperature superconductors , low-dimensional magnetic systems (such as quasi-one-dimensional antiferromagnets ) and magnetic impurities in metals ( Kondo model ) as well as critical phenomena associated with boundary conditions.

1983 to 1987 he was a Sloan Research Fellow . In 1988 he received the Steacie Prize , the Hertzberg Medal in 1990 , the Rutherford Medal in 1991 , the Killam Prize and the Jacob Biely Prize in 1992 and the Lars Onsager Prize in 2012 . He is a Fellow of the Royal Society of Canada and became a Fellow of the American Physical Society in 2002, the Royal Society in 2010 and a member of the Académie des Sciences in 2016 .

The laudation for election to the Royal Society highlights his numerous seminal contributions across a wide range of theoretical physics .

Fonts

  • Field Theory Methods and Quantum Critical Phenomena. In: Zinn-Justin Brezin (editor): Fields, Strings and Critical Phenomena. Les Houches Lectures, North Holland 1990, pp. 563-640.

Web links

Individual evidence

  1. ^ Ian Affleck: Bose condensation in quasi-one-dimensional antiferromagnets in strong fields . In: Physical Review B . tape 43 , no. 4 , February 1, 1991, p. 3215-3222 , doi : 10.1103 / PhysRevB.43.3215 .
  2. ^ Ian Affleck, Greg F. Wellman: Longitudinal modes in quasi-one-dimensional antiferromagnets . In: Physical Review B . tape 46 , no. 14 , October 1, 1992, p. 8934-8953 , doi : 10.1103 / PhysRevB.46.8934 .
  3. ^ I Affleck: Quantum spin chains and the Haldane gap . In: Journal of Physics: Condensed Matter . tape 1 , no. 19 , May 15, 1989, pp. 3047-3072 , doi : 10.1088 / 0953-8984 / 1/19/001 .
  4. ^ Ian Affleck, Andreas WW Ludwig: Critical theory of overscreened Kondo fixed points . In: Nuclear Physics B . tape 360 , no. 2-3 , August 19, 1991, pp. 641-696 , doi : 10.1016 / 0550-3213 (91) 90419-X .
  5. ^ Ian Affleck, Andreas WW Ludwig: Exact critical theory of the two-impurity Kondo model . In: Physical Review Letters . tape 68 , no. 7 , February 17, 1992, p. 1046-1049 , doi : 10.1103 / PhysRevLett.68.1046 .
  6. ^ Ian Affleck, Andreas WW Ludwig: Universal non-integer “ground-state degeneracy” in critical quantum systems . In: Physical Review Letters . tape 67 , no. 2 , July 8, 1991, p. 161-164 , doi : 10.1103 / PhysRevLett.67.161 .
  7. ↑ Ian Affleck has made numerous ground-breaking contributions across a wide range of theoretical physics. , Quote from the laudatory speech
personal data
SURNAME Affleck, Ian
BRIEF DESCRIPTION Canadian theoretical physicist
DATE OF BIRTH 2nd July 1952
PLACE OF BIRTH Vancouver