Vladimir Jurko Glaser

Vladimir Jurko Glaser (April 21, 1924 – January 22, 1984) was a Croatian theoretical physicist working on quantum field theory and the canonization of the analytic S-matrix.

Biography

Glaser was born in Gorizia, Italy. He graduated physics from the University of Zagreb in 1949 and later was attending seminar of Werner Heisenberg (1951-52) at Göttingen. Based on work carried out in Göttingen under Heisenberg he received a doctorate degree from the University of Zagreb. Being a part of Heisenberg's group at Göttingen he later worked with many famous physicists such as Harry Lehmann, Wolfhart Zimmermann (on extensions of LSZ formalism) and Walter Thirring.[1][2] From 1955 to 1957 he was head of the Department of Theoretical Physics at the Ruđer Bošković Institute in Zagreb. In 1957 he found a permanent employment at the Department of Theoretical Physics of CERN, Geneva. He died in Geneva.[3][4]

In 1955, he published one of the first monographs on quantum electrodynamics, Kovarijantna kvantna elektrodinamika (in Croatian).[5] With French physicists Jacques Bros and Henri Epstein he worked on setting up analyticity properties required for the use of dispersion relations in high energy collisions.[3] Epstein, Glaser and Arthur Jaffe proved that (Wightman) quantum fields can necessarily have negative energy density values.[6] Together with Henri Epstein, he found a new approach to renormalization theory called causal perturbation theory, where ultraviolet divergences are avoided in the calculation of Feynman diagrams by using mathematically well-defined quantities only.[7]

gollark: It's very elegant.
gollark: I just used this.
gollark: (including negative ones)
gollark: Express a number as a sum of fibonacci numbers.
gollark: What exactly *did* #8 do?

References
  1. V. Glaser; H. Lehmann; W. Zimmermann (1957). "Field operators and retarded functions". Il Nuovo Cimento. 6 (5). pp. 1122–1128.CS1 maint: uses authors parameter (link)
  2. Walter Thirring (2010). The Joy of Discovery: Great Encounters Along the Way. University of Vienna, Austria & CERN, Switzerland.
  3. "Vladimir Jurko Glaser" (PDF). web.cern.ch. CERN Scientific Information Service. Retrieved 2015-01-17.
  4. "Glaser, Vladimir Jurko". enciklopedija.lzmk.hr. Miroslav Krleža Institute of Lexicography. Retrieved 2015-01-17.
  5. Vladimir Glaser (1955). Kovarijantna kvantna elektrodinamika. Yugoslav Academy of Arts and Sciences.
  6. H. Epstein; V. Glaser; A. Jaffe (1965). "Nonpositivity of the Energy Density in Quantized Field Theories". Nuovo Cimento. 36. pp. 1016–1022.CS1 maint: uses authors parameter (link)
  7. Epstein, H; Jurko, Vladimir Glaser (1973). "The role of locality in perturbation theory". Annales de l'Institut Henri Poincaré A. 19 (3). pp. 211–295.CS1 maint: uses authors parameter (link)
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