Gennady Chibisov (russian: Геннадий Чибисов; September 23, 1946 – August 7, 2008) was a

Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

cosmologist Cosmology () is a branch of physics and metaphysics dealing with the nature of the universe. The term ''cosmology'' was first used in English in 1656 in Thomas Blount's ''Glossographia'', and in 1731 taken up in Latin by German philosopher ...

. He obtained his PhD in 1972, from the

Moscow Institute of Physics and Technology Moscow Institute of Physics and Technology (MIPT; russian: Московский Физико-Технический институт, also known as PhysTech), is a public research university located in Moscow Oblast, Russia. It prepares speciali ...

, with a thesis entitled "Entropy perturbations in cosmology". He is best known for his 1981 paper on the origin of cosmological density perturbations from quantum fluctuations, coauthored with

Viatcheslav Mukhanov Viatcheslav Fyodorovich Mukhanov (russian: Вячесла́в Фёдорович Муха́нов; born October 2, 1956) is a Soviet/Russian born German theoretical physicist and cosmologist. He is best known for the theory of Quantum Origin of th ...

. This is the earliest of a number of calculations addressing the origin of density fluctuations in

inflationary cosmology In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of the universe, expansion of space in the early universe. The inflationary epoch lasted from seconds after the conje ...

, which is the most common hypothesis for the origin of the expanding universe and the structure within it. The Mukhanov-Chibisov paper was part of the work honoured by the 2013

Gruber Prize in Cosmology The Gruber Prize in Cosmology, established in 2000, is one of three prestigious international awards worth US$500,000 made by the Gruber Foundation, a non-profit organization based at Yale University in New Haven, Connecticut. Since 2001, the G ...

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{{DEFAULTSORT:Chibisov, Gennady 1946 births Soviet cosmologists Soviet physicists 20th-century Russian physicists Moscow Institute of Physics and Technology alumni 2008 deaths

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