# Dr. Ludwig Dmitrievich Faddeev

### Laboratory of Mathematical Problems of Physics, Petersburg Department of Steklov Institute of Mathematics, St.Petersburg, Russia

## Curator and author

**Featured Author: Ludwig Dmitrievich Faddeev**

Dr. **Ludwig Dmitrievich Faddeev** (b. 1934 Mar 23) was born in Leningrad. A graduate of Leningrad University (working under Loga Ladyzhenskaya and Vladimir Fock) he now works in the Department of Mathematics at the Russian Academy of Sciences, as a professor at St. Petersburg State University, and at the Steklov Mathematical Institute (POMI).

Faddeev's major awards include the Dirac medal of the ICTP, the Heineman Prize for Mathematical Physics, the Max Planck Medal, and the Henri Poincaré prize. He has been invited to give the Loeb Lectures at Harvard (1975), the Fermi lectures at Scuola Normale de Pisa (1994), the Euler lecture of the German Mathematical Society (2004), and the the Leonardo da Vinci lecture at Milan University. Faddeev is a member of the Russian Academy of Sciences, a foreign member of the National Academy of Sciences (USA), the American Academy of Arts and Sciences, the Academies of Sweden, Finland, Poland, France, Brazil, China and Academia Europia.

Dr. Faddeev has been called "one of the creators of modern mathematical physics." He developed new methods in the quantum inverse scattering problem, and his results on the three-body problem are applied daily in computer simulations. With the "Leningrad group" of young scientists he devised the Hamiltonian formulation and quantization of integrable models, which eventually led to the advent of quantum groups. He is perhaps most famous for developing what are now called "Faddeev-Popov ghosts", which serve to maintain the consistency of the path integral formulation in gauge theories.

Scholarpedia articles:

- Faddeev-Popov ghosts (2009), Scholarpedia, 4(4):7389.

(Author profile by Leo Trottier)

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