Authorised form of nameKhalatnikov; Isaak Markovich (1919 - 2021)
Dates1919 - 2021
Place of birthDnipro [Dnepropetrovsk], Dnipropetrovs'ka Oblast, Ukraine, Europe [known as Ekaterinoslav at the time of Khalatnikov's birth]
Date of birth17/10/1919
Place of deathChernogolovka, Moskovskaya Oblast, Russia, Asia
Date of death09/01/2021
Research fieldTheoretical physics; cosmology; general relativity; superfluidity; quantum field theory
Dnipropetrovsk State University, BSc (1941); PhD (1952)
Researcher, later head of department at P.L. Kapitza Institute of Physical Problems of the USSR Academy of Sciences (1945-1965); chief of the military staff of nuclear research in the USSR, involved with developing the USSR's first atomic bomb; Professor, Moscow Institute for Physics and Technology (1954-); Director, Landau Institute for Theoretical Physics, Moscow (1965-1992), Honorary Director (1993-); Lorentz Associate Professor of Mathematics and Natural Sciences, Leiden University (1969); Professor, School of Physics and Astronomy, Tel Aviv University (1993-); President of Landau Network - Centro Volta, Como, Italy (1994-); Asteroid 468725 Khalat named in his honor.
State Prize of the USSR 1953; Landau Prize of the USSR Academy of Sciences 1974; Alexander-von-Humboldt Award 1989; Kiwanis Prize 'For Science and Disarmament' 1999; I. E. Tamm Gold Medal of the Russian Academy of Sciences 2010; Marcel Grossmann Award in 2012
Academy of Sciences of the Soviet Union (1984)
Membership categoryForeign Member
Date of election09/06/1994
Age at election74
Published works
General contextIsaak Khalatnikov is a Russian theoretical physicist who has made significant contributions to a variety of fields, including general relativity and quantum field theory, as well as quantum liquids and superfluidity. Isaak is best known for his work on the role of singularities in relativistic models of the Universe’s evolution.

He helped to discover a general solution to the Einstein field equations, which contained an oscillatory chaotic singularity. This was named the Belinsky–Khalatnikov–Lifshitz (BKL) singularity, reflecting his crucial role in its development. In addition, his more recent work has indicated the likelihood of the Universe having had an early phase of rapid expansion, or inflation.

Isaak has received many accolades in recognition of his work, including the State Prize of the USSR in 1953, the Alexander von Humboldt Award in 1989, the I. E. Tamm Gold Medal of the Russian Academy of Sciences in 2010 and the Marcel Grossmann Award in 2012.
Royal Society profile page (, accessed 11 February 2021)
Landau Insitute for Theoretical Physics (2012) 'PROFESSOR ISAAK M. KHALATNIKOV', (accessed 11 February 2021)
Khalatnikov, I. M. (2012). From the Atomic Bomb to the Landau Institute: Autobiography. Top Non-Secret. Germany: Springer Berlin Heidelberg
Virtual International Authority File
Royal Society codeNA4207
Archives associated with this Fellow
Reference numberTitleDate
IM/002527Khalatnikov, Isaac Markovich1995
EC/1994/43Khalatnikov, Isaak Markovich: certificate of election to the Royal Society1988
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