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Léon Rosenfeld

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Léon Rosenfeld
Rosenfeld in 1963
Born14 August 1904
Charleroi, Belgium
DiedMarch 23, 1974(1974-03-23) (aged 69)
CitizenshipBelgium
Alma materUniversity of Liège (PhD, 1926)
Known forBelinfante–Rosenfeld stress–energy tensor, coined the term lepton
SpouseYvonne Cambresier
ChildrenAndrée, Jean
AwardsFrancqui Prize (1949)
Signature

Léon Rosenfeld (French: [ʁɔzɛnfɛld]; 14 August 1904 in Charleroi – 23 March 1974[1]) was a Belgian physicist and a communist activist.

Rosenfeld was born into a secular Jewish family. He was a polyglot who knew eight or nine languages and was fluent in at least five of them.[2]

Rosenfeld obtained a PhD at the University of Liège in 1926, and he was a close collaborator of the physicist Niels Bohr from 1930 until Bohr's death in 1962.[3] Rosenfeld published in 1930 the first systematic Hamiltonian approach to Lagrangian models that possess a local gauge symmetry, which predates by two decades the work by Paul Dirac and Peter Bergmann.[4] Rosenfeld contributed to a wide range of physics fields, from statistical physics and quantum field theory to astrophysics.[2] Along with Frederik Belinfante, he derived the Belinfante–Rosenfeld stress–energy tensor. He also founded the journal Nuclear Physics and coined the term lepton.[5]

In 1933, Rosenfeld married Yvonne Cambresier, who was one of the first women to obtain a Physics PhD from a European university. They had a daughter, Andrée Rosenfeld (1934–2008) and a son, Jean Rosenfeld.[6]

Awards and honors

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Rosenfeld held chairs at multiple universities: Liège, Utrecht, Manchester, and Copenhagen.[2]

In 1949 Léon Rosenfeld was awarded the Francqui Prize for Exact Sciences.[2]

Works

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  • Rosenfeld, Léon (1948). Nuclear Forces. North-Holland.
  • Rosenfeld, Léon (1951). Theory Of Electrons. North-Holland.
  • Bohr, Niels; Rosenfeld, Léon (1933). "Zur Frage der Messbarkeit der elektromagnetischen Feldgrössen" [On the Question of the Measurability of Electromagnetic Field Quantities]. Royal_Danish_Academy_of_Sciences_and_Letters (in German): 123–166 – via Translated from German (1996) Niels Bohr Collected Works. Vol. 7. North–Holland: Amsterdam. Demonstrated the logical consistency of quantum electrodynamics.


References

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  1. ^ Léon Rosenfeld's Marxist defense of complementarity, by Anja Skaar Jacobsen "Archived copy" (PDF). Archived from the original (PDF) on 17 July 2011. Retrieved 17 July 2011.{{cite web}}: CS1 maint: archived copy as title (link)
  2. ^ a b c d Jacobsen, Anja Skaar (2012). Léon Rosenfeld: Physics, Philosophy, and Politics in the Twentieth Century. doi:10.1142/7776. ISBN 978-981-4307-81-9.
  3. ^ "Obituary. Léon Rosenfeld" (PDF). Nature. 251: 86. 6 September 1974. doi:10.1038/251086a0.
  4. ^ Leon Rosenfeld and the challenge of the vanishing momentum in quantum electrodynamics, by Donald Salisbury [1]
  5. ^ Rosenfeld, Léon (1948). Nuclear Forces. Interscience Publishers, New York, xvii.
  6. ^ Smith, Claire. "Andree Jeanne Rosenfeld (1934–2008)". Retrieved 28 November 2015.
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