John T. Lewis
John Trevor Lewis ( born April 15, 1932 in Swansea, † 21 January 2004) was a British mathematician and mathematical physicist. He is one of the pioneers of quantum stochastic ( noncommutative probability theory).
Lewis was the son of a shipbroker, went to Cardiff and from 1948 in Belfast to school and studied from 1949 at Queen 's University in Belfast with a bachelor's degree in 1952 and his doctorate in 1955 with Alexander Dalgarno and David R. Bates ( Quantal Calculations Relating to Certain rate Processes) 1955/56, he was a post-doctoral researcher at the University of Oxford with Charles A. Coulson and was from 1957 to 1959 Lecturer at Christ Church College in Oxford. In 1959 he transferred to Brasenose College, whose Tutorial Fellow, he was from 1960 to 1972. 1964 to 1967 he was dean ( Dean ) and University Lecturer from 1966. In 1969 he was a visiting scientist at the Institute for Advanced Study and in 1970 at the Rockefeller University in Mark Kac. In 1972 he went as a Professor in the Dublin Institute for Advanced Studies (DIAS ) to succeed John L. Synge. He opened the DIAS for other scientists in Ireland and was instrumental in helping the threatened closure to prevent 1988. He went in 2002 at DIAS in retirement. He also taught for many years at University College Dublin and Trinity College in Dublin, whose honorary professorship he received in 1999.
1982 to 1989 he was Commitee of the International Association of Mathematical Physics, which he won in 1988 after Congress Swansea Executive. He has been a visiting scientist at the University of Warwick and in Groningen ( where he Nicolaas Marinus Hugenholtz and Marinus Winnink worked ) had, from 1992 to 1995 an honorary professorship in Swansea, where in 1997 held a conference on his 65th birthday, and from 1998 in Cardiff. In 1989 he visited Russia as a guest of the Steklov Institute of the Soviet Academy of Sciences.
1985 to 1987 he was president of the Irish Federation of University Teachers. In 1977 he became a member of the Royal Irish Academy and its president from 1999 to 2001.
He dealt as a mathematical physicist with very different areas such as theoretical chemistry and variational methods in quantum mechanical perturbation theory, the Ising model (which he treated with methods of operator ), the mathematics of the measurement problem in quantum mechanics ( stimulated by lectures of George Mackey in Oxford in 1966 / 67 and in collaboration with Brian Davies), Brownian motion on hypersurfaces, Bose -Einstein condensation (also stimulated by Kac ), quantum mechanical treatment of thermodynamics and quantum stochastic processes. For the latter he was encouraged during his visit to New York by Mark Kac. He worked in this field with his students Lyn Thomas, with David Evans and George W. Ford together. The joint monograph with Evans in 1977 was influential in the development of quantum stochastic as well as an essay by Luigi Accardi and Alberto Frigerio.
In the 1990s he began to take an interest for applications in communication technology, inspired by a visit to the laboratories of Dobrushin in Moscow, which partially funded this way. His application of probability theory (Large Deviation Theory) on Internet communication (eg queuing behavior of routers ) also led to the establishment of its own company ( Corvil ) and 2001 he built the Communications Network Research Institute ( CNRI ) of the Dublin Institute of Technology on, with a Principal Investigator Award from Science Foundation Ireland.
His PhD is one of Robin Lyth Hudson.
He was married since 1959 to the chemist Maureen McEntin, with whom he had four children.