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Dietrich Stauffer (6 February 1943 – 6 August 2019) was a German professor of
theoretical physics Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict List of natural phenomena, natural phenomena. This is in contrast to experimental p ...
at the
University of Cologne The University of Cologne () is a university in Cologne, Germany. It was established in 1388. It closed in 1798 before being re-established in 1919. It is now one of the largest universities in Germany with around 45,187 students. The Universit ...
. He is known in particular for his work on
percolation theory In statistical physics and mathematics, percolation theory describes the behavior of a network when nodes or links are added. This is a geometric type of phase transition, since at a critical fraction of addition the network of small, disconnected ...
,
cellular automata A cellular automaton (pl. cellular automata, abbrev. CA) is a discrete model of computation studied in automata theory. Cellular automata are also called cellular spaces, tessellation automata, homogeneous structures, cellular structures, tessel ...
and
computational physics Computational physics is the study and implementation of numerical analysis to solve problems in physics. Historically, computational physics was the first application of modern computers in science, and is now a subset of computational science ...
.


Life and work

Stauffer was born in
Bonn Bonn () is a federal city in the German state of North Rhine-Westphalia, located on the banks of the Rhine. With a population exceeding 300,000, it lies about south-southeast of Cologne, in the southernmost part of the Rhine-Ruhr region. This ...
in 1943, one of the four children of theologian
Ethelbert Stauffer Ethelbert Stauffer (May 8, 1902 in Friedelsheim – August 1, 1979 in Erlangen) was a German Protestant theologian and numismatist. Life Stauffer was the son of a Mennonite preacher born and raised in Worms. After attending the local grammar schoo ...
. He studied
physics Physics is the scientific study of matter, its Elementary particle, fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge whi ...
in
Munich Munich is the capital and most populous city of Bavaria, Germany. As of 30 November 2024, its population was 1,604,384, making it the third-largest city in Germany after Berlin and Hamburg. Munich is the largest city in Germany that is no ...
, gaining a
PhD A Doctor of Philosophy (PhD, DPhil; or ) is a terminal degree that usually denotes the highest level of academic achievement in a given discipline and is awarded following a course of graduate study and original research. The name of the deg ...
in 1970 with a thesis on
phase transition In physics, chemistry, and other related fields like biology, a phase transition (or phase change) is the physical process of transition between one state of a medium and another. Commonly the term is used to refer to changes among the basic Sta ...
s and the
superfluidity Superfluidity is the characteristic property of a fluid with zero viscosity which therefore flows without any loss of kinetic energy. When stirred, a superfluid forms vortices that continue to rotate indefinitely. Superfluidity occurs in two ...
of
helium Helium (from ) is a chemical element; it has chemical symbol, symbol He and atomic number 2. It is a colorless, odorless, non-toxic, inert gas, inert, monatomic gas and the first in the noble gas group in the periodic table. Its boiling point is ...
. He then did post-doctoral work in the United States on
phase transitions In physics, chemistry, and other related fields like biology, a phase transition (or phase change) is the physical process of transition between one state of a medium and another. Commonly the term is used to refer to changes among the basic Sta ...
and
nucleation In thermodynamics, nucleation is the first step in the formation of either a new Phase (matter), thermodynamic phase or Crystal structure, structure via self-assembly or self-organization within a substance or mixture. Nucleation is typically def ...
before returning to Germany to work with
Kurt Binder Kurt Binder (10 February 1944 – 27 September 2022) was an Austrian theoretical physicist. Biography He received his Ph.D. in 1969 at the Technical University of Vienna, and his habilitation degree 1973 at the Technical University of Munich. ...
at
Saarland University Saarland University (, ) is a public research university located in Saarbrücken, the capital of the German state of Saarland. It was founded in 1948 in Homburg in co-operation with France and is organized in six faculties that cover all major ...
. In 1975 he became eligible for a professorship on completion of his
habilitation Habilitation is the highest university degree, or the procedure by which it is achieved, in Germany, France, Italy, Poland and some other European and non-English-speaking countries. The candidate fulfills a university's set criteria of excelle ...
. Two years later he was appointed associate professor of theoretical physics at the University of Cologne, where he remained for the rest of his career. During the 1970s Stauffer carried out research on percolation theory, publishing a review in ''
Physics Reports ''Physics Reports'' is a peer-reviewed scientific journal, a review section of '' Physics Letters'' that has been published by Elsevier since 1971. The journal publishes long and deep reviews on all aspects of physics. In average, the length of th ...
'' in 1979, followed by a book ''An introduction to percolation theory'' in 1985, which would become his most-cited work. An expanded version, co-authored with
Amnon Aharony Amnon Aharony (; born 7 January 1943) is an Israeli Professor (Emeritus) of Physics in the School of Physics and Astronomy at Tel Aviv University, Israel and in the Physics Department of Ben Gurion University of the Negev, Israel. After years of ...
, came out in 1992. In 1989 he was one of the founding directors of the supercomputer centre set up at the
Forschungszentrum Jülich Forschungszentrum Jülich (FZJ; “Jülich Research Centre”) is a German national research institution that pursues interdisciplinary research in the fields of energy, information, and bioeconomy. It operates a broad range of research infrast ...
, where one of his main areas of research was cellular automata. In the 1990s he pioneered
econophysics Econophysics is a non-orthodox (in economics) interdisciplinary research field, applying theories and methods originally developed by physicists in order to solve problems in economics, usually those including uncertainty or stochastic processes ...
and
sociophysics Social physics or sociophysics is a field of science which uses mathematical tools inspired by physics to understand the behavior of human crowds. In a modern commercial use, it can also refer to the analysis of social phenomena with big data. Soc ...
, publishing the book ''Evolution, Money, War and Computers'' with Brazilian colleagues. Stauffer published 620 articles and six books, as well as editing the ''Annual Reviews of Computational Physics'' and serving as a member of the editorial board of a number of journals. He was a visiting professor at several universities including
St. Francis Xavier University St. Francis Xavier University is a public undergraduate liberal arts university located in Antigonish, Nova Scotia, Canada. It is a member of the Maple League, a group of primarily undergraduate universities in Eastern Canada. History St. Fran ...
in Canada, and universities in Niteroi, Brazil, and
Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
and
Marseille Marseille (; ; see #Name, below) is a city in southern France, the Prefectures in France, prefecture of the Departments of France, department of Bouches-du-Rhône and of the Provence-Alpes-Côte d'Azur Regions of France, region. Situated in the ...
in France. Awards included the
Gay-Lussac–Humboldt Prize The Gay-Lussac–Humboldt Prize is a German–French science prize. It was created in 1981 by French President Valéry Giscard d'Estaing and German Chancellor Helmut Schmidt based on the recommendation of the German and French research ministries ...
(1992) and the Gentner-Kastler prize (1999). Following his retirement in 2008, Stauffer pursued an interest in history, attending lectures at the University of Cologne. He died in August 2019.


References

{{DEFAULTSORT:Stauffer, Dietrich 1943 births 2019 deaths German theoretical physicists German physicists People from Bonn Academic staff of the University of Cologne