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{{Short description|Theoretical physicist known for superfluidity and macroscopic quantum systems}} | {{Short description|Theoretical physicist known for superfluidity and macroscopic quantum systems}} | ||
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{{Biography page}} | {{Biography page}} | ||
{{Infobox scientist | {{Infobox scientist | ||
| name = Anthony Leggett | | name = Anthony Leggett | ||
| image = Anthony Leggett.jpg | |||
| caption = Anthony Leggett | |||
| birth_date = 26 March 1938 | | birth_date = 26 March 1938 | ||
| birth_place = London, England | | birth_place = London, England | ||
Latest revision as of 23:01, 24 May 2026
| Anthony Leggett | |
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| Anthony Leggett | |
| Born | 26 March 1938 London, England
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| Known for | Superfluid helium-3; macroscopic quantum phenomena; Leggett-Garg inequality |
| Awards | Nobel Prize in Physics (2003); Wolf Prize in Physics (2002/2003) |
Anthony James Leggett (born 26 March 1938) is a British-American theoretical physicist known for work on superfluidity, superconductivity, and macroscopic quantum systems.
Quantum context
Leggett's theory of superfluid helium-3 clarified how paired fermions can form a coherent quantum liquid with rich order-parameter structure. This work connected condensed-matter physics with broader ideas about symmetry breaking and quantum many-body states.
He also developed influential tests and models for macroscopic quantum behavior, including the Leggett-Garg inequality, making his work relevant to Physics:Quantum decoherence and the boundary between microscopic and macroscopic quantum phenomena.
Linked Quantum Collection pages
- Physics:Quantum decoherence
- Physics:Quantum superconductivity
- Physics:Quantum statistical mechanics
- Physics:Quantum many-body
References
- "The Nobel Prize in Physics 2003". Nobel Prize Outreach. https://www.nobelprize.org/prizes/physics/2003/summary/.
- Leggett, A. J. (1980). "Macroscopic Quantum Systems and the Quantum Theory of Measurement". Progress of Theoretical Physics Supplement 69: 80-100. doi:10.1143/PTP.69.80.
Author: Harold Foppele
Source attribution: Biography:Anthony Leggett