Anthony Leggett: key obituary facts
Is Anthony Leggett dead? Yes. Anthony Leggett died on March 8, 2026, at age 87.
Cause of death: Anthony Leggett's cause of death has not been publicly confirmed.
What was Anthony Leggett known for?
They was known as British-American theoretical physicist.
More about Anthony Leggett
Born: March 26, 1938.
Nationality: United KingdomUnited States.
Known for: Caldeira–Leggett model of quantum dissipation, Leggett–Garg inequality, Leggett inequality, Superfluid phase of helium-3.
Anthony Leggett, the British–American theoretical physicist and professor at the University of Illinois Urbana-Champaign, died on March 8, 2026.
He was 87. Sir Anthony James Leggett was widely recognised as a world leader in the theory of low-temperature physics, and his pioneering work on superfluidity was recognised by the 2003 Nobel Prize in Physics.
He shaped the theoretical understanding of normal and superfluid helium liquids and strongly coupled superfluids, and helped set directions for research in the quantum physics of macroscopic dissipative systems and the use of condensed systems to test the foundations of quantum mechanics.
Sir Anthony James Leggett (26 March 1938 – 8 March 2026) was a British–American theoretical physicist and professor at the University of Illinois Urbana-Champaign (UIUC). Leggett was widely recognised as a world leader in the theory of low-temperature physics, and his pioneering work on superfluidity was recognised by the 2003 Nobel Prize in Physics. He shaped the theoretical understanding of normal and superfluid helium liquids and strongly coupled superfluids. 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.