Biography:Klaus Fredenhagen

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Short description: German physicist
Klaus Fredenhagen
Longo Fredenhagen Rehren (cropped).jpg
Klaus Fredenhagen (middle) with Roberto Longo (left) and Karl-Henning Rehren (right), Oberwolfach 2002
Born
Celle, Germany
NationalityGermany
Alma materUniversity of Hamburg
Scientific career
FieldsPhysics
InstitutionsUniversity of Hamburg
ThesisDie Quantenelektrodynamik mit einem Freiheitsgrad fuer das Photonfeld (1976)
Doctoral advisor

Klaus Fredenhagen (born 1 December 1947) is a German theoretical physicist who works on the mathematical foundations of quantum field theory.[1]

Biography

Klaus Fredenhagen was born on 1 December 1947 in Celle, a German city in Lower Saxony. He graduated in 1976[2] from the University of Hamburg under the supervision of Gert Roepstorff and Rudolf Haag.[3] In 1985 he became a privatdozent and in 1990 a full professor at the second theory institute of the Hamburg University.[4] Since 2013 he has been a professor emeritus and has continued to be active in research.[5]

Scientific career

His research interests are algebraic quantum field theory and quantum field theory in curved spacetime. In 1981 he proved the existence of antiparticles in massive quantum field theories without using the CPT-invariance.[6] In 1990 he and Rudolf Haag made important contributions to the understanding of the Hawking radiation of black holes on a rigorous mathematical footing.[7] In 1994, together with Sergio Doplicher and John E. Roberts, he investigated the mathematical foundations of quantum gravity in terms of the quantum structure of spacetime at the Planck scale.[8] In 1996, together with Romeo Brunetti, he started working on the generalization of the Epstein-Glaser renormalization procedure of interacting quantum field theories in curved spacetime using techniques from the microlocal analysis.[9] He is currently working, together with Detlev Buchholz, on a new C*-algebraic approach to interacting quantum field theories.[10]

Honors and awards

In 1987 Klaus Fredenhagen was awarded the physics prize of the Göttingen Academy of Sciences[11] and in 1997 he was Leibniz Professor[12] at the University of Leipzig.[13] In December 2017 the workshop Quantum Physics meets Mathematics was held in honor of his 70th birthday at the University of Hamburg.[14]

Selected publications

Edited books

  • Fredenhagen, Klaus (2015). "An Introduction to Algebraic Quantum Field Theory". in Brunetti, Romeo; Dappiaggi, Claudio; Fredenhagen, Klaus et al.. Advances in Algebraic Quantum Field Theory. Mathematical Physics Studies. Springer International Publishing. pp. 1–30. doi:10.1007/978-3-319-21353-8. ISBN 978-3-319-21352-1. 
  • Brunetti, Romeo; Fredenhagen, Klaus (2009). "Quantum Field Theory on Curved Backgrounds". in Fredenhagen, Klaus; Bär, Christian. Quantum Field Theory on Curved Backgrounds - concepts and mathematical foundations. Lecture Notes in Physics. 786. Springer. p. 129. doi:10.1007/978-3-642-02780-2_5. ISBN 978-3-642-02779-6. 


Articles


See also


References

  1. ↑ "Klaus Fredenhagen personal homepage". https://unith.desy.de/people/allmembers/fredenha/. 
  2. ↑ The doctoral thesis is Fredenhagen, Klaus (1976). Die Quantenelektrodynamik mit einem Freiheitsgrad für das Photonfeld (Thesis) (in Deutsch). Hamburg.
  3. ↑ Klaus Fredenhagen at the Mathematics Genealogy Project.
  4. ↑ He was the successor of Rudolf Haag's chair, who retired in 1987. See e.g. the historical overview "About the Theoretical Physics Institute II". https://www1.physik.uni-hamburg.de/en/th2/ueber-das-institut.html. 
  5. ↑ "Fredenhagen, Klaus" (in de). https://www.hpk.uni-hamburg.de/resolve/id/cph_person_00002964. 
  6. ↑ Borchers, Hans-Jürgen (1992). "The CPT theorem in two-dimensional theories of local observables". Communications in Mathematical Physics 143 (2): 315–332. doi:10.1007/BF02099011. Bibcode: 1992CMaPh.143..315B. https://projecteuclid.org/euclid.cmp/1104248958. 
  7. ↑ Kay, Bernard S. (2006). Encyclopedia of Mathematical Physics. Academic Press. pp. 202–212. doi:10.1016/B0-12-512666-2/00018-3. ISBN 978-0-12-512666-3. 
  8. ↑ Bahns, Dorothea; Doplicher, Sergio; Morsella, Gerardo; Piacitelli, Gherardo (2015). "Quantum Spacetime and Algebraic Quantum Field Theory". in Brunetti, Romeo; Dappiaggi, Claudio; Fredenhagen, Klaus et al.. Advances in algebraic quantum field theory. Springer, Cham. pp. 289–330. doi:10.1007/978-3-319-21353-8_7. ISBN 978-3-319-21353-8. 
  9. ↑ Khavkine, Igor; Moretti, Valter (2015). "Algebraic QFT in Curved Spacetime and Quasifree Hadamard States: An Introduction". in Brunetti, Romeo; Dappiaggi, Claudio; Fredenhagen, Klaus et al.. Advances in Algebraic Quantum Field Theory. Mathematical Physics Studies. Springer International Publishing. pp. 191–251. doi:10.1007/978-3-319-21353-8. ISBN 978-3-319-21352-1. 
  10. ↑ Buchholz, Detlev; Fredenhagen, Klaus (2020). "A C*-algebraic approach to interacting quantum field theories". Communications in Mathematical Physics 377 (2): 947–969. doi:10.1007/s00220-020-03700-9. Bibcode: 2020CMaPh.377..947B. 
  11. ↑ "Physics prize winners" (in de). https://adw-goe.de/en/awards/categories/preise-fuer-biologie-fuer-chemie-und-fuer-physik/#c4501. 
  12. ↑ The Leibniz Professorship is one of the highest honor awarded by the University of Leipzig and it is granted every semester since 1994. See "Leibniz Professorship". https://www.ral.uni-leipzig.de/en/support/leibniz-programme/leibniz-professorship/. 
  13. ↑ "Leibniz Alumni". https://www.ral.uni-leipzig.de/unterstuetzung/leibniz-programm/leibniz-alumni/. 
  14. ↑ "Quantum Physics meets Mathematics - a workshop on the occasion of Klaus Fredenhagen's 70th birthday". https://www.lqp2.org/node/1424. 

External links





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