Rudolf Haag
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Rudolf Haag  

Born  
Died  5 January 2016 Neuhaus (Schliersee) , Germany^{[1]}  (aged 93)
Alma mater  University of Stuttgart 
Known for  Haag–Kastler axioms Haag–Łopuszański–Sohnius theorem Haag's theorem Haag–Ruelle scattering theory 
Awards  Max Planck medal (1970), International Association of Mathematical Physics (1997) 
Scientific career  
Fields  Physics 
Institutions  Max Planck Institute, Princeton University, University of Marseille, University of Illinois at UrbanaChampaign, University of Hamburg 
Thesis  Die korrespondenzmäßige Methode in der Theorie der Elementarteilchen^{[2]} 
Doctoral advisor  Fritz Bopp^{[2]} 
Doctoral students 

Rudolf Haag (17 August 1922 – 5 January 2016) was a German physicist.^{[3]} He was best known for his contributions to the algebraic formulation of axiomatic quantum field theory (QFT), namely the Haag–Kastler axioms,^{[4]} and a central nogo theorem in QFT, Haag's theorem, which demonstrates the nonexistence of a unitary timeevolution operator in the interaction picture.
Early life[edit]
Haag was born in Tübingen, Germany. He studied Physics at Technische Hochschule Stuttgart, now the University of Stuttgart, from 1948 to 1954 and then worked on his dissertation in Munich and defended in 1951. His supervisor was Fritz Bopp.
Career[edit]
From 1956 to 1957 he was at Max Planck Institute in Göttingen. After doing one year each as visiting professor at Princeton University and University of Marseille, he was professor of physics at the University of Illinois at UrbanaChampaign for six years until 1966.
After that and until his retirement he held a chair for theoretical physics at the University of Hamburg.
In 1965 he founded the journal Communications in Mathematical Physics, which he guided as Chief Editor for eight years.
He was awarded the Max Planck medal in 1970 and the Henri Poincaré Prize of the International Association of Mathematical Physics in 1997.
Death[edit]
It was reported by SZ Gedenken that Haag died on 5 January 2016 at the age of 93.^{[5]}
References[edit]
 ^ Obituary (13 January 2016)
 ^ ^{a} ^{b} ^{c} ^{d} ^{e} ^{f} Rudolf Haag at the Mathematics Genealogy Project
 ^ Rehren, KarlHenning; Jaffe, Arthur (22 March 2016). "Obituary: Rudolf Haag". Physics Today (Daily Edition).
 ^ An algebraic approach to quantum field theory by Rudolf Haag, Daniel Kastler (Illinois U., Urbana), J.Math.Phys.5:848861,1964^{[permanent dead link]}
 ^ "Rudolf Haag" (in German). SZ Gedenken. Retrieved 17 January 2016.
Further reading[edit]
 Kastler, Daniel (2003): "Rudolf Haag  Eighty Years". Communications in Mathematical Physics (ISSN 00103616), Vol 237, No 1, pp 3–6. (doi:10.1007/s0022000308291)
External links[edit]
 A picture of Rudolf Haag at II. Institute for Theoretical Physics, Hamburg University (Photographer: Ralf D. Tscheuschner, a pupil of Haag)