Celso Grebogi (born 1947) is a Brazilian

theoretical physicist Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain and predict natural phenomena. This is in contrast to experimental physics, which uses experimen ...

who works in the area of

chaos theory Chaos theory is an interdisciplinary area of scientific study and branch of mathematics focused on underlying patterns and deterministic laws of dynamical systems that are highly sensitive to initial conditions, and were once thought to have co ...

. He is one among the pioneers in the nonlinear and complex systems and

. Currently he works at the

University of Aberdeen The University of Aberdeen ( sco, University o' 'Aiberdeen; abbreviated as ''Aberd.'' in List of post-nominal letters (United Kingdom), post-nominals; gd, Oilthigh Obar Dheathain) is a public university, public research university in Aberdeen, Sc ...

as the "Sixth Century Chair in Nonlinear and Complex Systems". He has done extensive research in the field of

plasma physics Plasma ()πλάσμα
, Henry George Liddell, R ...

before his work on the theory of

dynamical system In mathematics, a dynamical system is a system in which a Function (mathematics), function describes the time dependence of a Point (geometry), point in an ambient space. Examples include the mathematical models that describe the swinging of a ...

s. He and his colleagues (

Edward Ott Edward Ott (born 22 December 1941) is an American physicist most noted for his contributions to the development of chaos theory. Ott was born and grew up in New York City. He attended Stuyvesant High School, received his bachelor's degree in El ...

and James A. Yorke) have shown with a numerical example that one can convert a chaotic attractor to any one of numerous possible attracting time-periodic motions by making only small time-dependent perturbations of an available system parameter. This article is considered as one among the classic works in the control theory of chaos and their control method is known as the OGY method. He was listed in the 2016

Thomson Reuters Citation Laureates Clarivate Citation Laureates formerly Thomson Reuters Citation Laureates is a list of candidates considered likely to win the Nobel Prize in their respective field. The candidates are so named based on the citation impact of their published resear ...

Research areas

Grebogi has worked in the fields of dynamics of nonlinear and complex systems including

chaotic dynamics Chaotic was originally a Danish trading card game. It expanded to an online game in America which then became a television program based on the game. The program was able to be seen on 4Kids TV (Fox affiliates, nationwide), Jetix, The CW4Kids, ...

fractal geometry In mathematics, a fractal is a geometric shape containing detailed structure at arbitrarily small scales, usually having a fractal dimension strictly exceeding the topological dimension. Many fractals appear similar at various scales, as illus ...

systems biology Systems biology is the computational modeling, computational and mathematical analysis and modeling of complex biological systems. It is a biology-based interdisciplinary field of study that focuses on complex interactions within biological syst ...

, fluid advection and

relativistic quantum chaotic dynamics Relativity may refer to: Physics * Galilean relativity, Galileo's conception of relativity * Numerical relativity, a subfield of computational physics that aims to establish numerical solutions to Einstein's field equations in general relativity ...

Edited books

Together with Miguel A. F. Sanjuán (Rey Juan Carlos University, Spain) he was the editor of the boo
Recent Progress In Controlling Chaos

Honours and awards

In 2012 Grebogi was elected a Fellow of the

Royal Society of Edinburgh The Royal Society of Edinburgh is Scotland's national academy of science and letters. It is a registered charity that operates on a wholly independent and non-partisan basis and provides public benefit throughout Scotland. It was established i ...

References

*E. Ott, J. A. Yorke ''Chaos, strange attractors and fractal basin boundaries in nonlinear dynamical systems'', Science, volume 238, 1987, p. 585 *E. Ott, J. A. Yorke ''Controlling chaos'', Physical Review Letters, volume 64, 1990, p. 1196 *T. Shinbrot, E. Ott, J. A. Yorke ''Using small perturbations to control chaos'', Nature, volume 363, 1993, p. 411 *M. A. F. Sanjuán ''Recent progress in controlling chaos'', World Scientific 2010

External links

University of Maryland Webpage

University of Aberdeen Webpage

Google Scholar Page
{{DEFAULTSORT:Grebogi, Celso 1947 births Living people 21st-century Brazilian physicists Chaos theorists Systems scientists Theoretical physicists University of Maryland, College Park alumni University of Maryland, College Park faculty 20th-century Brazilian physicists Brazilian expatriate academics Fellows of the American Physical Society