Lev Okun

Lev Borisovich Okun, (Russian Лев Борисович Окунь, English transliteration Lev Okun, born June 7, 1929 in Sukhinichi, Kaluga Oblast ) is a Russian theoretical physicist who works mainly on elementary particle physics.

Career

Okun was a student of Arkady Migdal and Isaak Pomeranchuk ( and Lev Landau.) He studied at the Moscow Institute of Physical Engineering ( MEPhI ) with the completion in 1953 and was then at the ITEP, where he was director of the Laboratory of Theoretical Physics later. He is since 1962 professor of physics at the Moscow Institute of Physics and Technology.

Work

Okun was a leading elementary physics in the Soviet Union. In the 1960s he developed independently of Shoichi Sakata a precursor and early competitor of the quark model, the Sakata and Sakata - Okun model. With Igor Kobsarew and Yakov Seldowitsch he examined 1974 vacuum domain walls with Kobsarew and Mikhail Voloshin 1974 quantum tunneling from metastable vacuum bubbles in quantum field theory. In the 1990s he worked with Wictor A. Novikov and Mikhail I. Wysozki to calculating electroweak corrections to the production of Z- bosons.

The Okun Pomeranchuk theorem from 1956 states the asymptotic equality of the interaction cross sections for particles in the same isospin multiplet for high energies.

In 1957 he published with Boris Joffe and Alexei P. Rudik a work on parity violation in the weak interaction.

In a lecture in 1962, he introduced the term hadron.

In the 1970s he studied with Vladimir Gribow, Valentin Sakharov and Alexander Dolgov the asymptotic behavior of the weak interaction at high energies. In the late 1970s he developed with Sakharov, Voloshin, Mikhail Schifman, Arkady Vainshtein and VA Novikov QCD sum rules for the determination of mass and lifetime of hadrons.

He dealt with early Astroparticle and calculated in 1965 with SB Pikelner and Zeldovich today's heavier density Reliktteilchen (then with the fractional charge like quarks ) from the early days of the universe. With Pomeranchuk and Kobsarew he struck in the 1960s, the existence of mirror worlds before, the only gravitationally with the known universe interact ( a concept in the brane - world cosmologies again became topical later).

Okun is also known for educationally clever representations of particle physics in books, articles and lectures.

Honors and Memberships

Okun is a corresponding member of the Russian Academy of Sciences, full member since 1990 since 1966.

1980-1985 he was the Scientific Committee ( Scientific Policy Committee ) at CERN and he was the scientific advisory board of DESY. He is a Fellow of the Institute of Physics, member of the Academia Europaea and the New York Academy of Sciences.

Writings

  • Weak Interactions of Elementary Particles. Pergamon Press, Oxford 1965.
  • Leptons and quarks. North Holland 1982.
  • The Relations of Particles. In: World Scientific. In 1991. ( Lectures by Okun )
  • Physics of elementary particles. Akademie Verlag, 1991. (Russian 1981, popular science )
  • Impact of the Sakata model. In: Prog.Theor.Phys.Suppl. Volume 167, 2007, pp. 163-174.
  • Mirror particles and mirror matter: 50 years of speculation and search. In: Phys. Uspekhi. 50, 2007, pp. 380-389.
  • Fundamental Units: Physics and Metrology., 2003.
  • The life and legacy of Pomeranchuk. , 2003.
  • Spacetime and vacuum as seen from Moscow. In: Int. J. Mod Phys. A. 2001.
  • JD Jackson: Historical roots of gauge invariance. In: Reviews of Modern Physics. Volume 73, 2001, p 663
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