Christof Wetterich

Christof Wetterich
Born	1952 Freiburg, Germany
Fields	Physics
Institutions	Heidelberg University
Alma mater	Freiburg University
Known for	Functional Renormalization, Quintessence
Notable awards	Max-Planck Research Prize (2005)

Christof Wetterich is a German theoretical physicist. Born 1952 in Freiburg (Germany), he studied physics in Paris, Cologne and Freiburg, where he received his PhD in 1979. He worked at CERN in Geneva and DESY in Hamburg. Since 1992 he has a chair for theoretical physics at Ruprecht-Karls-Universität Heidelberg. His major research interests are cosmology and particle physics. The development of the theoretical method of functional renormalization by Wetterich has found applications in many areas of physics, e.g. it provides a suitable framework to study quantum gravity^[1], Yang-Mills theories^[2] and it was also useful in non-relativistic quantum systems like the BCS to BEC crossover where it bridges the two theories in a unified theoretical language^[3].

Wetterich is best known for his proposal^[4][5] of dynamical dark energy or quintessence in 1987. This could explain the observed accelerated expansion of the Universe. He has done fundamental work for the theoretical understanding of tiny masses of neutrinos^[6][7]. The method of functional renormalization relates macro physical structures to micro sphysical laws in a continuous way. Its modern form is based on the exact Wetterich equation^[8][9].

Honours and awards

Wetterich received the Max-Planck Research Prize^[10] in 2005. Since 2006 he is member of the Heidelberg Academy of Sciences^[11] .

References

1. ^ Nonperturbative evolution equation for quantum gravity, M. Reuter, Phys. Rev. D 57, 971 (1998), arXiv:hep-th/9605030v1
2. ^ Effective average action for gauge theories and exact evolution equations, M. Reuter and C. Wetterich, Nucl. Phys. B 417, 181 (1994)
3. ^ Flow equations for the BCS-BEC crossover, S. Diehl, H. Gies, J.M. Pawlowski, and C. Wetterich, Phys. Rev. A 56, 021602(R) (2007), arXiv:cond-mat/0701198v2 and
   Functional renormalization group approach to the BCS-BEC crossover, S. Diehl, S. Floerchinger, H. Gies, J. M. Pawlowski, and C. Wetterich, Ann. Phys. 9, 615 (2010), arXiv:0907.2193v2
4. ^ Cosmology and the Fate of Dilatation Symmetry, C. Wetterich, Nucl. Phys. B 302, 668 (1988)
5. ^ The Cosmon Model for an Asymptotically Vanishing Time Dependent Cosmological "Constant", C. Wetterich, Astron. Astrophys. 301, 321 (1995), arXiv:hep-th/9408025v1
6. ^ Neutrino Masses and the Scale of B-L Violation, C. Wetterich, Nucl. Phys. B 187, 343 (1981)
7. ^ Proton Lifetime and Fermion Masses in an SO(10) Model, G. Lazarides, Q. Shafi, and C. Wetterich, Nucl. Phys. B 181, 287 (1981)
8. ^ Exact Evolution Equation for the Effective Potential, C. Wetterich, Phys. Lett. B 301, 90 (1993);
9. ^ Non-perturbative Renormalization Flow in Quantum Field Theory and Statistical Physics, J. Berges, N. Tetradis, and C. Wetterich, Phys. Rept. 363, 223 (2002), arXiv:hep-ph/0005122
10. ^ There exists a short public video (German) as a film portrait to the winners in addition.
11. ^ Portrait at the HAW homepage.

External links

• Christof Wetterich's homepage at the Institute for Theoretical Physics at Heidelberg University.