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Robin K. Bullough (21 November 1929 – 30 August 2008) was a British
mathematical physicist Mathematical physics is 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 development of ...
known for his contributions to the theory of
solitons In mathematics and physics, a soliton is a nonlinear, self-reinforcing, localized wave packet that is , in that it preserves its shape while propagating freely, at constant velocity, and recovers it even after collisions with other such locali ...
, in particular for his role in the development of the theory of the optical soliton, now commonly used, for example, in the theory of trans-oceanic
optical fibre An optical fiber, or optical fibre, is a flexible glass or plastic fiber that can transmit light from one end to the other. Such fibers find wide usage in fiber-optic communications, where they permit transmission over longer distances and at ...
communication theory Communication theory is a proposed description of communication phenomena, the relationships among them, a storyline describing these relationships, and an argument for these three elements. Communication theory provides a way of talking about a ...
, but first recognised in Bullough's work on ultra-short (nano- and femto-second) optical pulses. He is also known for deriving exact solutions to the nonlinear equations describing these solitons and for associated work on
integrable systems In mathematics, integrability is a property of certain dynamical systems. While there are several distinct formal definitions, informally speaking, an integrable system is a dynamical system with sufficiently many conserved quantities, or first ...
, infinite-dimensional
Hamiltonian system A Hamiltonian system is a dynamical system governed by Hamilton's equations. In physics, this dynamical system describes the evolution of a physical system such as a planetary system or an electron in an electromagnetic field. These systems can ...
s (both classical and quantum), and the
statistical mechanics In physics, statistical mechanics is a mathematical framework that applies statistical methods and probability theory to large assemblies of microscopic entities. Sometimes called statistical physics or statistical thermodynamics, its applicati ...
for these systems. Bullough also contributed to nonlinear mathematical physics, including
Bose–Einstein condensation Bose–Einstein may refer to: * Bose–Einstein condensate, a phase of matter in quantum mechanics ** Bose–Einstein condensation (network theory), the application of this model in network theory ** Bose–Einstein condensation of polaritons ** B ...
in magnetic traps. Bullough obtained his first academic position in the Mathematics Department at
UMIST The University of Manchester Institute of Science and Technology (UMIST) was a university based in the centre of the city of Manchester in England. It specialised in technical and scientific subjects and was a major centre for Research univer ...
in 1960 and was appointed chair of Mathematical Physics in 1973 where he remained until his retirement in 1995. He was then an Emeritus Professor in the same department, which has now become the School of Mathematics in the
University of Manchester The University of Manchester is a public university, public research university in Manchester, England. The main campus is south of Manchester city centre, Manchester City Centre on Wilmslow Road, Oxford Road. The University of Manchester is c ...
.


Education and career

Bullough's father, William Bullough, was a teacher of German in
Newcastle-under-Lyme Newcastle-under-Lyme is a market town and the administrative centre of the Borough of Newcastle-under-Lyme in Staffordshire, England. It is adjacent to the city of Stoke-on-Trent. At the 2021 United Kingdom census, 2021 census, the population ...
and was himself a graduate of the
Victoria University of Manchester The Victoria University of Manchester, usually referred to as simply the University of Manchester, was a university in Manchester, England. It was founded in 1851 as Owens College. In 1880, the college joined the federal Victoria University. A ...
. His mother Edith (née Norman) was also a teacher and both parents were
Quakers Quakers are people who belong to the Religious Society of Friends, a historically Protestantism, Protestant Christian set of Christian denomination, denominations. Members refer to each other as Friends after in the Bible, and originally ...
. Although universally known as Robin, he was actually christened Robert Keith Bullough. Both Robin and his elder brother
Donald Donald is a Scottish masculine given name. It is derived from the Gaelic name ''Dòmhnall''.. This comes from the Proto-Celtic *''Dumno-ualos'' ("world-ruler" or "world-wielder"). The final -''d'' in ''Donald'' is partly derived from a misinter ...
attended Newcastle High School (then a
direct grant grammar school A direct grant grammar school was a type of selective secondary school in the United Kingdom that existed between 1945 and 1976. One quarter of the places in these schools were directly funded by central government, while the remainder attracted ...
). Donald went on to become a successful professor of medieval history. On leaving school at 16, Bullough obtained a scholarship to
Emmanuel College, Cambridge Emmanuel College is a constituent college of the University of Cambridge. The college was founded in 1584 by Sir Walter Mildmay, Chancellor of the Exchequer to Elizabeth I. The site on which the college sits was once a priory for Dominican mo ...
but had to do
National Service National service is a system of compulsory or voluntary government service, usually military service. Conscription is mandatory national service. The term ''national service'' comes from the United Kingdom's National Service (Armed Forces) Act ...
in the RAF in 1948 and 1949. Three days before his
demobilisation Demobilization or demobilisation (see spelling differences) is the process of standing down a nation's armed forces from combat-ready status. This may be as a result of victory in war, or because a crisis has been peacefully resolved and milita ...
he had an accident, putting a rawl plug into a wall, as a piece of steel from a chisel flew into his left eye. He was practically blind in that eye from then on. He obtained a BA in
Natural Sciences Natural science or empirical science is one of the branches of science concerned with the description, understanding and prediction of natural phenomena, based on empirical evidence from observation and experimentation. Mechanisms such as peer ...
at Cambridge, specialising in
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 ...
for Part II. He went on to obtain a PhD in
Chemistry Chemistry is the scientific study of the properties and behavior of matter. It is a physical science within the natural sciences that studies the chemical elements that make up matter and chemical compound, compounds made of atoms, molecules a ...
from the
University of Leeds The University of Leeds is a public research university in Leeds, West Yorkshire, England. It was established in 1874 as the Yorkshire College of Science. In 1884, it merged with the Leeds School of Medicine (established 1831) and was renamed Y ...
in 1957. He then obtained a job as a Mathematical Physicist at the
British Rayon Research Association The British Rayon Research Association was a research institute formed in 1946 by the British Rayon Federation and others.The Times, November 29, 1946 page 10 It was funded by the Department of Scientific and Industrial Research and by voluntary f ...
in Manchester between 1959 and 1960 before obtaining a post as lecturer at UMIST. Bullough travelled widely to facilitate collaboration, with regular visiting appointments and research visits to
Copenhagen Copenhagen ( ) is the capital and most populous city of Denmark, with a population of 1.4 million in the Urban area of Copenhagen, urban area. The city is situated on the islands of Zealand and Amager, separated from Malmö, Sweden, by the ...
,
Jyväskylä Jyväskylä () is a city in Finland and the regional capital of Central Finland. It is located in the Finnish Lakeland. The population of Jyväskylä is approximately , while the Jyväskylä sub-region, sub-region has a population of approximately ...
, Los Alamos, DTH Lyngby in Denmark, and
Ben Gurion University Ben-Gurion University of the Negev (BGU) (, ''Universitat Ben-Guriyon baNegev'') is a public research university in Beersheba, Israel. Named after Israeli national founder David Ben-Gurion, the university was founded in 1969 and currently has f ...
in Israel. He was promoted to Reader in 1967 and Professor of Mathematical Physics in 1973. He organised many conferences over his career including the first National Quantum Electronics Conferences (QEP1) in
Manchester Manchester () is a city and the metropolitan borough of Greater Manchester, England. It had an estimated population of in . Greater Manchester is the third-most populous metropolitan area in the United Kingdom, with a population of 2.92&nbs ...
in September 1973 and at which he made a first report of 'optical solitons', this was the first of fifteen biennial meetings. By 1973 his research group in UMIST had found solutions to the sine-Gordon and the self-induced transparency (SIT) equations for their multi-soliton solutions and gone on to both introduce, and to solve the
initial value problem In multivariable calculus, an initial value problem (IVP) is an ordinary differential equation together with an initial condition which specifies the value of the unknown function at a given point in the domain. Modeling a system in physics or ...
for, the system they called the ‘Reduced Maxwell-Bloch (RMB) Equations’. Bullough supervised 24 successful doctoral students and had some 33 post doctoral research associates and visiting fellows. In 1999 he gave the specially invited 'Special Foundation Lecture' at the Fourteenth UK National Quantum Electronics & Photonics Conference (QEP14) held at the University of Manchester. The lecture was entitled "The optical soliton of QE1 is the BEC of QE14: has the quantum soliton arrived?" paid tribute to his 45 years work in this area. This work in theoretical
quantum optics Quantum optics is a branch of atomic, molecular, and optical physics and quantum chemistry that studies the behavior of photons (individual quanta of light). It includes the study of the particle-like properties of photons and their interaction ...
includes the discovery of the "optical soliton" as such around 1973. Only
Steven Chu Steven ChuNobel Laureate The Nobel Prizes (, ) are awarded annually by the Royal Swedish Academy of Sciences, the Swedish Academy, the Karolinska Institutet, and the Norwegian Nobel Committee to individuals and organizations who make outstanding contributions in th ...
1997, was similarly honoured at this conference. Bullough died on 30 August 2008. A symposium was organised in his honour in the Alan Turing Building in June 2009.


Bibliography

Bullough published over 200 scientific papers with a range of co-authors. Some of the most highly cited are: *Puri RR, Bullough RK, Quantum electrodynamics of an atom making 2-photon transitions in an ideal cavity, ''Journal of the Optical Society of America B-optical physics'', 5 (10), 2021-2028, 1988 *Dodd RK, Bullough RK, Polynomial conserved densities for sine-Gordon equations ''Proceedings of the Royal Society of London series A—Mathematical Physical and Engineering Sciences'' 352 (1671): 481-503 1977 *Eilbeck JC, Gibbon JD, Caudrey PJ, Bullough RK. Solitons in nonlinear optics 1: more accurate description of 2pi pulse in self-induced transparency. ''Journal of Physics A—Mathematical and general'' 6 (9): 1337–1347 1973 *Hassan SS, Bullough RK, Theory of dynamical stark effect, ''Journal of Physics B—atomic molecular and optical physics'', 8 (9): l147-l152 1975 *Caudrey PJ, Gibbon JD, Eilbeck JC, Bullough RK. Exact multisolution solutions of self-induced transparency and sine-gordon equations, ''Physical Review Letters'' 30 (6): 237-238 1973 *Bullough RK, Jack PM, Kitchenside PW, et al., Solitons in laser physics, ''Physica Scripta'' 20 (3-4): 364-381 1979 *Dodd RK, Bullough RK, Backlund transformations for sine-Gordon equations, ''Proceedings of the Royal Society of London Series A-mathematical physical and engineering sciences'' 351, (1667): 499-523 1976


References


External links

* {{DEFAULTSORT:Bullough, Robin 20th-century British mathematicians 21st-century British mathematicians British mathematical physicists 1929 births 2008 deaths Alumni of Emmanuel College, Cambridge Alumni of the University of Leeds Academics of the University of Manchester Academics of the University of Manchester Institute of Science and Technology Solitons