was a Japanese

mathematical physicist Mathematical physics refers to the development of mathematical methods for application to problems in physics. The ''Journal of Mathematical Physics'' defines the field as "the application of mathematics to problems in physics and the developmen ...

, best known for his works in

statistical physics Statistical physics is a branch of physics that evolved from a foundation of statistical mechanics, which uses methods of probability theory and statistics, and particularly the Mathematics, mathematical tools for dealing with large populations ...

and

non-equilibrium statistical mechanics In physics, statistical mechanics is a mathematical framework that applies statistical methods and probability theory to large assemblies of microscopic entities. It does not assume or postulate any natural laws, but explains the macroscopic be ...

Work

In the early 1950s, Kubo transformed research into the

linear response A linear response function describes the input-output relationship of a signal transducer such as a radio turning electromagnetic waves into music or a neuron turning synaptic input into a response. Because of its many applications in information ...

properties of near-equilibrium condensed-matter systems, in particular the understanding of electron transport and conductivity, through the Kubo formalism, a

Green's function In mathematics, a Green's function is the impulse response of an inhomogeneous linear differential operator defined on a domain with specified initial conditions or boundary conditions. This means that if \operatorname is the linear differential ...

approach to linear response theory for quantum systems. In 1977 Ryogo Kubo was awarded the

Boltzmann Medal The Boltzmann Medal (or Boltzmann Award) is a prize awarded to physicists that obtain new results concerning statistical mechanics; it is named after the celebrated physicist Ludwig Boltzmann. The Boltzmann Medal is awarded once every three years ...

''for his contributions to the theory of non-equilibrium statistical mechanics, and to the theory of fluctuation phenomena''. He is cited particularly for his work in the establishment of the basic relations between transport coefficients and equilibrium time correlation functions: relations with which his name is generally associated.

Publications

;Books available in English *''Statistical mechanics : an advanced course with problems and solutions'' / Ryogo Kubo, in cooperation with Hiroshi Ichimura, Tsunemaru Usui, Natsuki Hashitsume (1965, 7th edit.1988) *''Many-body theory'' : lectures / edited by Ryōgo Kubo (1966) *''Dynamical processes in solid state optics'' / edited by Ryōgo Kubo and Hiroshi Kamimura(1967) *''Thermodynamics : an advanced course with problems and solutions'' / Kubo Ryogo (1968) *''Statistical physics of charged particle systems'' / edited by Ryogo Kubo and Taro Kihara (1969) *''Solid state physics'' / edited by Ryogo Kubo and Takeo Nagamiya ; translator, Scripta-Technica, Inc. ; editor of English ed., Robert S. Knox (1969) *''Physics of quantum fluids'' / edited by Ryōgo Kubo and Fumihiko Takano (1971) *''Relaxation of elementary excitations'' : proceedings of the Taniguchi International Symposium, Susono-shi, Japan, October 12–16, 1979 / editors, R. Kubo and E. Hanamura (1980) *''Selected papers of professor Ryogo Kubo on the occasion of his sixtieth birthday ''/ edited by Executive Committee on the Commemoration of Professor Kubo's Sixtieth Birthday (1980) *''Statistical physics'' / M. Toda, R. Kubo, N. Saitō (1983–1985) *''Equilibrium statistical mechanics'' / M. Toda, R. Kubo, N. Saitô (1983 2nd edit. 1992) *''Nonequilibrium statistical mechanics'' / R. Kubo, M. Toda, N. Hashitsume (1985 2nd edit. 1991) *''Evolutionary trends in the physical sciences'' : proceedings of the Yoshio Nishina centennial symposium, Tokyo, Japan, December 5–7, 1990 (1991) ;Articles * * – cited more than 4300 times on Web of Science.Web of Science Database

References

External links

A Japanese physicist's view of Leiden (In 1981 Kubo was Lorentz Professor in Leiden)
Kyoto University. {{DEFAULTSORT:Kubo, Ryogo 1920 births 1995 deaths Japanese physicists University of Tokyo faculty Kyoto University faculty Keio University faculty University of Tokyo alumni Recipients of the Order of Culture Recipients of the Order of the Sacred Treasure, 1st class Laureates of the Imperial Prize Foreign associates of the National Academy of Sciences Fellows of the American Physical Society Presidents of the Physical Society of Japan

Work

Publications

See also

References

External links