Leonid Keldysh

Leonid Keldysh
Леонид Келдыш
Born
Leonid Veniaminovich Keldysh

(1931-04-07)April 7, 1931
Moscow, RSFSR, Soviet Union
DiedNovember 11, 2016(2016-11-11) (aged 85)
Moscow, Russia
CitizenshipRussian
Known forKeldysh formalism
Franz–Keldysh effect
MotherLyudmila Keldysh
RelativesPyotr Novikov (step-father)
Mstislav Keldysh (uncle)
Sergei Novikov (step-brother)
AwardsEPS Europhysics Prize (1975)[1]
Rusnanoprize (2009)
Lomonosov Gold Medal (2015)
Scientific career
FieldsTheoretical physics
InstitutionsLebedev Physical Institute
Academic advisorsVitaly Ginzburg
Doctoral studentsYuri Kopaev

Leonid Veniaminovich Keldysh (Russian: Леонид Вениаминович Келдыш; 7 April 1931 – 11 November 2016) was a Soviet and Russian physicist. Keldysh was a professor in the I.E. Tamm Theory division of the Lebedev Physical Institute of the Russian Academy of Sciences in Moscow and a faculty member at Texas A&M University. He is known for developing the Keldysh formalism,[2] a powerful quantum field theory framework designed to describe a system in a non-equilibrium state, as well as for the theory of excitonic insulators (Keldysh-Kopaev model, with Yuri Kopaev).[3] Keldysh's awards include the 2009 Rusnanoprize, an international nanotechnology award, for his work related to molecular-beam epitaxy,[4] the 2011 Evgenii Feinberg Memorial Medal, and the 2015 Lomonosov Grand Gold Medal of the Russian Academy of Sciences.[5]

Keldysh was a son of mathematician Lyudmila Keldysh. His uncle, Mstislav Keldysh, was a mathematician and the president of the Academy of Sciences of the Soviet Union. Sergei Novikov, a mathematician and a Fields medalist, is his step-brother.[6]

  1. ^ "EPS Europhysics Prize". European Physical Society. Retrieved 13 January 2022.
  2. ^ L. V. Keldysh (1965). "Diagram technique for nonequilibrium processes". Soviet Physics JETP. 20: 1018–1026.
  3. ^ L. V. Keldysh and Yu. V. Kopaev (1965). "Possible instability of the semimetallic state toward Coulomb interaction". Soviet Physics - Solid State. 6: 2219–2224.
  4. ^ "Rusnanoprize Laureates". Archived from the original on 2016-07-10. Retrieved 2016-08-10.
  5. ^ Federico Capasso; Paul Corkum; Olga Kocharovskaya; Lev Pitaevskii; Michael V. Sadovskii (2017). "Leonid Keldysh". Physics Today. 70 (6): 75–76. Bibcode:2017PhT....70f..75C. doi:10.1063/PT.3.3605.
  6. ^ Sossinsky, A. B. "In the Other Direction". mccme.ru. Retrieved 7 October 2017.