Gennady Chibisov (; September 23, 1946 – August 7, 2008) was a

Soviet The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

cosmologist Cosmology () is a branch of physics and metaphysics dealing with the nature of the universe, the cosmos. The term ''cosmology'' was first used in English in 1656 in Thomas Blount's ''Glossographia'', with the meaning of "a speaking of the wor ...

. He obtained his PhD in 1972, from the

Moscow Institute of Physics and Technology Moscow Institute of Physics and Technology (MIPT; , also known as PhysTech), is a public university, public research university located in Moscow Oblast, Russia. It prepares specialists in theoretical physics, theoretical and applied physics, ...

, 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 (; 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 the Universe Structure. Working in 1980-1981 with Gennady Chib ...

. 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 space in the very early universe. Following the inflationary period, the universe continued to expand, but at a slower r ...

, 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 awarded by the Gruber Foundation, a non-profit organization based at Yale University in New Haven, Connecticut. Since 2001, t ...

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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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