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Heinz von Foerster 100
Organizing Institutions:
Heinz von Foerster Gesellschaft / Wien
ASC – American Society for Cybernetics
WISDOM – Wiener Institut für
  sozialwissenschaftliche Dokumentation und Methodik

Institut für Zeitgeschichte | Universität Wien
AINS – Austrian Institute for Nonlinear Studies
Christof Wetterich

Quantum fermions from classical statistics

Institut für Theoretische Physik
Univ. Heidelberg

Quantum mechanics can be obtained from classical statistics. It arises if the time evolution of the probability distribution follows an appropriate law , and if correlation functions appropriate for suitable subsystems are used for a description of measurements. As an example , we formulate the evolution law for the classical probability distribution that describes a quantum field theory for relativistic fermions. The one - particle states obey the usual rules of quantum mechanics , with interference and uncertainty relation. We also introduce the concept of a classical wave function for the description of classical statistics.


2006– : External Member, Max-Planck-Institute for Nuclear Physics, Heidelberg
2006– : Member, Heidelberger Akademie der Wissenschaften
2006– : Speaker, Transregional Research Project TRR33 "The Dark Universe", Heidelberg, Munich, Bonn
2005 Max Planck research prize
1999–2000: Dean, Faculty of Physics and Astronomy
1998–2008 Member of Selection Committee for A. v. Humboldt Awards
1992– : Heidelberg University, chair of theoretical physics
1985–1992: DESY (Hamburg), permanent staff
1985: Heisenberg Stipendium (at CERN)
1983–1985: Bern University
1983: Habilitation (Universitaet Freiburg)
1981–1983: Fellow at CERN (Geneva)
1979: Dissertation (PhD) (summa cum laude)
1977–1981: Employed by the University of Freiburg
1972–1978: Studies in Physics at Universite Paris VII, University of Cologne,
University of Freiburg, Diploma 1978

Cosmology: Proposal of a dynamical Dark Energy (quintessence) (1987); Proposal of Dark Energy – Dark Matter coupling; Investigation of time variation of fundamental constants in quintessence models; Analysis of role of Early Dark Energy for CMB and structure formation; Inflation as transition from higher dimensions to effective four dimensions (1983)
Particle Physics: Neutrino masses and oscillations, proposal of triplet mechanism as alternative to seesaw. Explanation of three generations of quarks and leptons by higher dimensional chirality index – this is widely used in superstring theories. Spinor gravity as proposal for quantum gravity. Development of new methods: Modern form of functional renormalization (effective average action, 1993). Phase transitions: Proposal of crossover replacing electroweak phase transition. Investigation of transition to quark gluon plasma. Non-Equilibrium Quantum Field Theory: Proposal of prethermalization.

S. Floerchinger, M. Scherer, S. Diehl, C. Wetterich: "Particle-hole fluctuations in the BCS-BEC crossover", Journal: Phys. Rev. B78, 174528 (2008)
J. Berges, Sz. Borsànyi, C. Wetterich: Prethermalization, Phys. Rev. Lett. 93 (2004) 1420002
P. Braun-Munzinger, J. Stachel, C. Wetterich: Chemical freeze-out and the QCD phase transition temperature, Phys. Lett. B596 (2004) 61
C. Wetterich: Crossover quintessence and cosmological history of fundamental "constants", Phys. Lett. B561 (2003) 10-16
C. Wetterich: Exact evolution equation for the effective potential, Phys. Lett. B301 (1993) 90, cited: 508
C. Wetterich: Cosmology and the fate of dilatation symmetry, Nucl. Phys. B302 (1988) 668, cited: 1211
G. Lazarides, Q. Shafi, C. Wetterich: Proton lifetime and fermion masses in an SO(10) model, Nucl. Phys. B181 (1981) 287, cited: 499