Klaus Fredenhagen Explained

Klaus Fredenhagen
Birth Date:1 December 1947
Birth Place:Celle, Germany
Nationality:German
Field:Physics
Alma Mater:University of Hamburg
Work Institution:University of Hamburg
Thesis Title:Die Quantenelektrodynamik mit einem Freiheitsgrad fuer das Photonfeld
Thesis Url:https://katalogplus.sub.uni-hamburg.de/vufind/Record/039673154
Thesis Year:1976

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 termsof 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

Articles

See also

References

  1. Web site: Klaus Fredenhagen personal homepage. March 28, 2021. Hamburg University. April 20, 2021. https://web.archive.org/web/20210420153424/https://unith.desy.de/people/allmembers/fredenha/. dead.
  2. The doctoral thesis is Fredenhagen. Klaus. 1976. Die Quantenelektrodynamik mit einem Freiheitsgrad für das Photonfeld. de. Hamburg.
  3. .
  4. He was the successor of Rudolf Haag's chair, who retired in 1987. See e.g. the historical overview Web site: About the Theoretical Physics Institute II. March 29, 2021. Hamburg University. April 18, 2021. https://web.archive.org/web/20210418080153/https://www1.physik.uni-hamburg.de/en/th2/ueber-das-institut.html. dead.
  5. Web site: Fredenhagen, Klaus. March 29, 2021. Hamburg University. de.
  6. Borchers. Hans-Jürgen. The CPT theorem in two-dimensional theories of local observables. Communications in Mathematical Physics. 143. 315–332. 1992. 2. 10.1007/BF02099011. 1992CMaPh.143..315B. 120842877.
  7. Book: Kay, Bernard S.. 2006. Quantum Field Theory in Curved Spacetime. Encyclopedia of Mathematical Physics. 202–212. Academic Press. 978-0-12-512666-3. 10.1016/B0-12-512666-2/00018-3. gr-qc/0601008. 16258638.
  8. Book: Bahns. Dorothea. Doplicher. Sergio. Morsella. Gerardo. Piacitelli. Gherardo. 2015. Brunetti. Romeo. Dappiaggi. Claudio. Fredenhagen. Klaus. Yngvason. Jakob. Quantum Spacetime and Algebraic Quantum Field Theory. Advances in algebraic quantum field theory. 289–330. Springer, Cham. 978-3-319-21353-8. 10.1007/978-3-319-21353-8_7. 1501.03298. 118886773.
  9. Book: Brunetti. Romeo. Dappiaggi. Claudio. Fredenhagen. Klaus. Yngvason. Jakob. Khavkine. Igor. Moretti. Valter. 2015. Algebraic QFT in Curved Spacetime and Quasifree Hadamard States: An Introduction. Advances in Algebraic Quantum Field Theory. Mathematical Physics Studies. 191–251. Springer International Publishing. 978-3-319-21352-1. 10.1007/978-3-319-21353-8. 2015aaqf.book.....B .
  10. Buchholz. Detlev. Fredenhagen. Klaus. A C*-algebraic approach to interacting quantum field theories. Communications in Mathematical Physics. 377. 947–969. 2020. 2. 10.1007/s00220-020-03700-9. 1902.06062. 2020CMaPh.377..947B. 92987721.
  11. Web site: Physics prize winners. de. Göttingen Academy of Sciences. March 30, 2021.
  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 Web site: Leibniz Professorship. March 29, 2021. Leipzig University.
  13. Web site: Leibniz Alumni. March 29, 2021. Leipzig University.
  14. Web site: Quantum Physics meets Mathematics - a workshop on the occasion of Klaus Fredenhagen's 70th birthday. March 28, 2021. Local Quantum Physics Crossroads.

External links

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