Ulrike Feudel

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Ulrike Feudel (* 1957 ) is professor for theoretical physics and complex systems at the Institute for Chemistry and Biology of the Sea (ICBM) at the Carl von Ossietzky University of Oldenburg .

Career

Institute building of the ICBM in Oldenburg

From 1983 to 1987 she worked at the Institute for Geography and Geoecology and then until 1991 at the Central Institute for Cybernetics and Information Processes of the Academy of Sciences of the GDR . She received her doctorate in 1985 from the Humboldt University in Berlin with a thesis on structure formation in reaction-diffusion systems with charged particles. From 1992 to 1996 she worked in the Max Planck working group on non-linear dynamics at the Institute for Physics at the University of Potsdam . As a habilitation at the University of Potsdam, she submitted a collection of nine papers on dynamics between regularity and chaos in 1996. The Heisenberg program funded research stays in Potsdam and at the University of Maryland, College Park from 1997 to 2000 . In 2000, she was appointed to the chair of theoretical physics and complex systems at the Institute for Chemistry and Biology of the Marine Environment (ICBM) of the University of Oldenburg called . From 1998 to 2001, she cooperated with her predecessor on the chair, Hans-Joachim Schellnhuber , in a DFG collaborative research center on the non-linear dynamics of ocean circulation . Later she was director of the ICBM, where she is responsible for the master's degree in environmental modeling .

She is a member of the editorial board of the scientific journals Mathematical Biosciences and Engineering (since 2003), Nonlinear Processes in Geophysics (since 2004) and the Russian Journal of Nonlinear Dynamics . She has been a member of the scientific advisory board of Chaos magazine since 2007 .

In 2015 she was awarded the MTA Distinguished Guest Scientist Fellowship by the Hungarian Academy of Sciences for her project “Critical Transitions in Environmental Systems”.

research

Ulrike Feudel, for example, researches Rössler attractors

Feudel researches in the area of complex systems . On the one hand, she deals conceptually with nonlinear dynamics , stability theory , in particular multistability , extreme events and phase transitions . She was one of the first non-chaotic strange attractors ( English Strange attractor nonchaotic ) studied. She discovered that even low-dimensional non-linear systems can have large numbers of co-existing attractors. She investigated the attractors of systems with quasiperiodicity. This describes vibrations that do not have an exact periodicity , but are determined by several superimposed frequencies that are not in an integer ratio to one another. On the other hand, it transfers the findings to environmental science , for example on predator-prey systems , neurons , algal blooms , or ocean convection, as well as systems of chemical reactions .

In the last few years she has also been investigating socio-technical systems such as the resilience of electricity transport systems. In 2014, the physics meets economics seminar of the young German Physical Society (jDPG) took place at her institute .

Books

  • U. Feudel, S. Kuznetsov, A. Pikovsky: Strange Nonchaotic Attractors: Dynamics Between Order and Chaos in Quasiperiodically Forced Systems . World Scientific, Singapore 2006, ISBN 978-981-256-633-1 , doi : 10.1142 / 6006

literature

Web links

Individual evidence

  1. ↑ Ulrike Feudel: Structure formation in reaction diffusion systems with charged particles, dissertation, Humboldt University of Berlin, title page.
  2. ↑ a b c d e f g Ulrike Feudel in the database of renowned academics AcademiaNet .
  3. ↑ Ulrike Feudel: Dynamics in between regularity and chaos . University of Potsdam, habilitation papers, 1996.
  4. ↑ Physicist accepted call , press service of the University of Oldenburg 7/01, January 11, 2001.
  5. ↑ Institute History on icbm.de, accessed on January 14 of 2019.
  6. ↑ Umweltmodellierung (M.Sc.) , icbm.de, accessed on January 14, 2019.
  7. ↑ Ulrike Feudel , Editorial Board, Russian Journal of Nonlinear Dynamics, ISSN 1816-448X. Retrieved January 14, 2019.
  8. ↑ Oldenburg physicist awarded Hungarian research prize , press service of the University of Oldenburg 340/15, September 8, 2015. See also: Research Prize , Nordwestzeitung , September 9, 2015.
  9. ↑ Mitesh S. Patel, Unnati Patel, Abhijit Sen, Gautam C. Sethia, Chittaranjan Hens, Syamal K. Dana, Ulrike Feudel, Kenneth Showalter, Calistus N. Ngonghala, Ravindra E. Amritkar: Experimental observation of extreme multistability in an electronic system of two coupled Rössler oscillators. In: Physical Review E . Volume 89, 2014, Article 022918, doi : 10.1103 / PhysRevE.89.022918 .
  10. ↑ a b c Ying-Cheng Lai, Celso Grebogi: Quasiperiodicity and suppression of multistability in nonlinear dynamical systems . In: The European Physical Journal Special Topics . tape 226 , no. 9 , June 2017, p. 1703–1719 , doi : 10.1140 / epjst / e2017-70062-0 .
  11. ↑ Alexander N. Pisarchik, Ulrike Feudel: Control of multistability . In: Physics Reports . Volume 540, Number 4, July 2014, pp. 167-218, doi : 10.1016 / j.physrep.2014.02.007 .
  12. ↑ Ulrike Feudel: Complex Dynamics in Multistable Systems . In: International Journal of Bifurcation and Chaos . Volume 18, number 06, 2008, pp. 1607-1626, doi : 10.1142 / S0218127408021233 .
  13. ↑ Ulrike Feudel, Celso Grebogi: Multistability and the control of complexity . In: chaos . Volume 7, Number 4, 1998, pp. 597-604, doi : 10.1063 / 1.166259 .
  14. ↑ AS Pikovsky, U. Feudel: Correlations and spectra of strange attractors nonchaotic . In: Journal of Physics A . Volume 27, number 15, pp. 5209-5219, doi : 10.1088 / 0305-4470 / 27/15/020 .
  15. ↑ U. Feudel, AS Pikovsky, MA Zaks: Correlation properties of a quasiperiodically forced two-level system . In: Physical Review E . Volume 51, number 3, 1995, pp. 1762-1769, doi : 10.1103 / PhysRevE.51.1762 .
  16. ↑ AS Pikovsky, U. Feudel: Characterizing strange nonchaotic attractors . In: Chaos , Volume 5, Number 1, 1995, pp. 253-260, doi : 10.1063 / 1.166074 .
  17. ↑ SP Kuznetsov, AS Pikovsky, U. Feudel: Birth of a strange attractor nonchaotic: A renormalization group analysis . In: Physical Review E . Volume 51, number 3, R1629, doi : 10.1103 / PhysRevE.51.R1629 .
  18. ^ U. Feudel, J. Kurths, AS Pikovsky: Strange non-chaotic attractor in a quasiperiodically forced circle map . In: Physica D , Volume 88, Number 3-4, pp. 176-186, doi : 10.1016 / 0167-2789 (95) 00205-I .
  19. ↑ AS Pikovsky, MA Zaks, U. Feudel, J. Kurth: singular continuous spectra in dissipative dynamics . In: Physical Review E . Volume 52, number 1, 1995, pp. 285-296, doi : 10.1103 / PhysRevE.52.285 .
  20. ↑ U. Feudel, A. Pikovsky, A. Politi: Renormalization of correlations and spectra of a strange non-chaotic attractor . In: Journal of Physics A . Volume 29, number 17, 1996, pp. 5297-5311, doi : 10.1088 / 0305-4470 / 29/17/008 .
  21. ↑ U. Feudel, C. Grebogi, BR Hunt, JA Yorke: Map with more than 100 coexisting low-period periodic attractors . In: Physical Review E . Volume 54, number 1, 1996, pp. 71-81, doi : 10.1103 / PhysRevE.54.71 .
  22. ↑ see English Wikipedia: quasiperiodicity
  23. ↑ Y.-C. Lai, U. Feudel, C. Grebogi: Scaling behaviors in the transition to chaos in quasiperiodically driven dynamical systems . In: Physical Review E . Volume 54, Number 6, December 1996, pp. 6070-6073, doi : 10.1103 / PhysRevE.54.6070 .
  24. ^ A. Witt, U. Feudel, A. Pikovsky: Birth of strange nonchaotic attractors due to interior crisis . In: Physica D , Vol. 109, Number 1-2, November 1997, pp. 180-190, doi : 10.1016 / S0167-2789 (97) 00168-1 .
  25. ^ U. Feudel, C. Grebogi, E. Ott: Phase-locking in quasiperiodically forced systems . In: Physics Reports , Volume 290, Number 1-2, 1997, pp. 11-25, doi : 10.1016 / S0370-1573 (97) 00055-0 .
  26. ↑ U. Feudel, A. Witt, Y.-C. Lai, C. Grebogi: Basin bifurcation in quasiperiodically forced systems . In: Physical Review E . Volume 58, number 3, 1998, pp. 3060-3066, doi : 10.1103 / PhysRevE.58.3060 .
  27. ^ HM Osinga, U. Feudel: Boundary crisis in quasiperiodically forced systems . In: Physica D . Volume 141, number 1-2, 2000, pp. 54-64, doi : 10.1016 / S0167-2789 (00) 00031-2 .
  28. ↑ E. Neumann, I. Sushko, Y. Maistrenko, U. Feudel: Synchronization and desynchronization under the influence of quasiperiodic forcing . In: Physical Review E . Volume 56, 2003, Article 026202, doi : 10.1103 / PhysRevE.67.026202 .
  29. ↑ MD Shrimali, A. Prasad, R. Ramaswamy, U. Feudel: Basin bifurcations in quasiperiodically forced coupled systems . In: Physical Review E . Volume 72, 2005, Article 036215, doi : 10.1103 / PhysRevE.72.036215 .
  30. ↑ Quasiperiodität , Lexikon der Physik, Spektrum.de, accessed on January 14, 2019.
  31. ↑ Martin Baurmann, Thilo Gross, Ulrike Feudel: Instabilities in spatially extended predator-prey systems: Spatio-temporal patterns in the neighborhood of Turing-Hopf bifurcations. In: Journal of Theoretical Biology . Volume 245, number 2, 2007, pp. 220-229, doi : 10.1016 / j.jtbi.2006.09.036 .
  32. ↑ Wolfgang Ebenhöh, Ulrike Feudel, Thilo Gross: Enrichment and foodchain stability: the impact of different forms of predator – prey interaction . In: Journal of Theoretical Biology . Volume 227, Number 3, April 2004, pp. 349-358, doi : 10.1016 / j.jtbi.2003.09.020 .
  33. ↑ Ulrike Feudel, Alexander Neiman, Xing Pei, Winfried Wojtenek: Homoclinic bifurcation in a Hodgkin – Huxley model of thermally sensitive neurons . In: chaos . Volume 10, 2000, pp. 231-239, doi : 10.1063 / 1.166488 .
  34. ↑ Jan A. Freund, Sebastian Mieruch, Bettina Scholze, Karen Wiltshire, Ulrike Feudel: Bloom dynamics in a seasonally forced phytoplankton – zooplankton model: Trigger mechanisms and timing effects . In: Ecological Complexity . Volume 3, Number 2, June 2006, pp. 129-139, doi : 10.1016 / j.ecocom.2005.11.001 .
  35. ↑ Subhendu Chakraborty, Ulrike Feudel: Harmful algal blooms: combining excitability and competition . In: Theoretical Ecology . Volume 7, number 3, August 2014, pp. 221-237, doi : 10.1007 / s12080-014-0212-1
  36. ^ T. Kuhlbrodt, S. Titz, U. Feudel, S. Rahmstorf: A simple model of seasonal open ocean convection. In: Ocean Dynamics . Volume 52, number 1, 2001, pp. 36-49, doi : 10.1007 / s10236-001-8175-3 .
  37. ↑ Calistus N. Ngonghala, Ulrike Feudel, Kenneth Showalter: Extreme multistability in a chemical model system . In: Physical Review E . Volume 83, 2011, Article 056206, doi : 10.1103 / PhysRevE.83.056206 .
  38. ↑ Success for two sustainability projects of the university , press service of the University of Oldenburg 475/14, November 21, 2014.
  39. ↑ Jonathan Barth, Klaus Eisenack , Ulrike Feudel, Jasper N. Meya: Dynamic quality regulation of the electricity grid. An intertemporal optimization model for analyzing path-dependencies in the provision of infrastructure quality . June 29, 2017, 15th IAEE European Conference.
  40. ↑ Johannes Kruse, Oliver Richters, Sebastian Wunderlich: Physics meets economics - interdisciplinary workshop brings physicists and economists together. In: Physics Journal . Volume 13, number 7, 2014, page 64 ( www.pro-physik.de ).
personal data
SURNAME Feudel, Ulrike
BRIEF DESCRIPTION German physicist
DATE OF BIRTH 1957