Ulf Lindström

	Ulf Lindström Ulf Lindström (born 12 November 1947) is a Swedish theoretical physicist working in the fields of string theory, supersymmetry, and general relativity. He earned his fil. kand. university degree at Stockholm University in 1972 and continued under the supervision of Bertel Laurent with doctoral studies. The title of his PhD thesis was "Extensions of general relativity: scalar tensor theory, topology of space-time and supergravity." He spent the year 1978-1979 at Brandeis University as a post-doc working with Stanley Deser, and after getting his doctoral degree, became a docent in Stockholm. During 1986-1987, he spent time as a research fellow at Stony Brook University. In 2002 he moved from Stockholm University to Uppsala University where he is now the chairman of the theoretical physics department. His most well-known contributions to theoretical physics are in the field of supersymmetry where he was one of the first people to discuss the hyper-Kähler quotient construction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Stockholm Stockholm () is the Capital city, capital and List of urban areas in Sweden by population, largest city of Sweden as well as the List of urban areas in the Nordic countries, largest urban area in Scandinavia. Approximately 980,000 people live in the Stockholm Municipality, municipality, with 1.6 million in the Stockholm urban area, urban area, and 2.4 million in the Metropolitan Stockholm, metropolitan area. The city stretches across fourteen islands where Mälaren, Lake Mälaren flows into the Baltic Sea. Outside the city to the east, and along the coast, is the island chain of the Stockholm archipelago. The area has been settled since the Stone Age, in the 6th millennium BC, and was founded as a city in 1252 by Swedish statesman Birger Jarl. It is also the county seat of Stockholm County. For several hundred years, Stockholm was the capital of Finland as well (), which then was a part of Sweden. The population of the municipality of Stockholm is expected to reach o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Stony Brook University Stony Brook University (SBU), officially the State University of New York at Stony Brook, is a public research university in Stony Brook, New York. Along with the University at Buffalo, it is one of the State University of New York system's two flagship institutions. Its campus consists of 213 buildings on over of land in Suffolk County and it is the largest public university (by area) in the state of New York. Opened in 1957 in Oyster Bay as the State University College on Long Island, the institution moved to Stony Brook in 1962. In 2001, Stony Brook was elected to the Association of American Universities, a selective group of major research universities in North America. It is also a member of the larger Universities Research Association. It is classified among "R1: Doctoral Universities – Very high research activity". Stony Brook University, in partnership with Battelle, manages Brookhaven National Laboratory, a national laboratory of the United States Depart ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	String Theorists This is a list of string theory topics. String theory * Strings * Nambu–Goto action * Polyakov action * Bosonic string theory * Superstring theory Type I string Type II string * Type IIA string theory * Type IIB string theory ** Heterotic string * N=2 superstring * M-theory Matrix theory Introduction to M-theory * F-theory * String field theory * Matrix string theory * Nonlinear sigma model * Tachyon condensation * RNS formalism * String theory landscape * History of string theory First superstring revolution Second superstring revolution String duality * T-duality * S-duality * U-duality * Montonen–Olive duality * Mysterious duality Particles and fields * Graviton * Dilaton * Tachyon * Ramond–Ramond field * Kalb–Ramond field * Magnetic monopole Branes * D-brane * S-brane * Black brane * Black holes * Black string * Brane cosmology * Quiver diagram * Hanany–Witten transition Supersymmetry * Supergravity * Superspace * Lie sup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Living People Related categories * :Year of birth missing (living people) / :Year of birth unknown * :Date of birth missing (living people) / :Date of birth unknown * :Place of birth missing (living people) / :Place of birth unknown * :Year of death missing / :Year of death unknown * :Date of death missing / :Date of death unknown * :Place of death missing / :Place of death unknown * :Missing middle or first names See also * :Dead people * :Template:L, which generates this category or death years, and birth year and sort keys. : {{DEFAULTSORT:Living people 21st-century people People by status ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Oskar Klein Memorial Lecture The Oskar Klein Memorial Lecture at Stockholm University, dedicated to the memory of the Swedish physicist Oskar Klein (1894-1977), is held annually since 1988 by a prominent physicist, who also receives the Oskar Klein Medal. The lecture is sponsored by the university and the Nobel Committee of the Royal Swedish Academy of Sciences. List of lecturers and recipients of the Medal Source: 2022 - Igor R. Klebanov 2020 - Roy Kerr 2019 - Lisa Randall 2018 - Leonard Susskind 2017 - Sheldon Glashow 2016 - Kip S. Thorne 2015 - Rashid Sunyaev 2014 - Andrew Strominger 2013 - Frank Wilczek 2012 - Juan Maldacena 2011 - Joseph Silk 2010 - Alexei A. Starobinsky 2009 - Peter Higgs 2008 - Helen Quinn 2007 - Gabriele Veneziano 2006 - Viatcheslav Mukhanov 2005 - Yoichiro Nambu 2004 - Pierre Ramond 2003 - Stephen Hawking 2002 - Martin Rees 2001 - Andrei Linde 2000 - David Gross 1999 - Gerard 't Hooft 1998 - Edward Witten 1997 - P. J. E. Peebles 1996 - Alexander Poly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Generalized Complex Geometry In the field of mathematics known as differential geometry, a generalized complex structure is a property of a differential manifold that includes as special cases a complex structure and a symplectic structure. Generalized complex structures were introduced by Nigel Hitchin in 2002 and further developed by his students Marco Gualtieri and Gil Cavalcanti. These structures first arose in Hitchin's program of characterizing geometrical structures via functionals of differential forms, a connection which formed the basis of Robbert Dijkgraaf, Sergei Gukov, Andrew Neitzke and Cumrun Vafa's 2004 proposal that topological string theories are special cases of a topological M-theory. Today generalized complex structures also play a leading role in physical string theory, as supersymmetric flux compactifications, which relate 10-dimensional physics to 4-dimensional worlds like ours, require (possibly twisted) generalized complex structures. Definition The generalized tangent bundle C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Nigel Hitchin Nigel James Hitchin FRS (born 2 August 1946) is a British mathematician working in the fields of differential geometry, gauge theory, algebraic geometry, and mathematical physics. He is a Professor Emeritus of Mathematics at the University of Oxford. Academic career Hitchin attended Ecclesbourne School, Duffield, and earned his BA in mathematics from Jesus College, Oxford, in 1968.''Fellows' News'', Jesus College Record (1998/9) (p.12) After moving to Wolfson College, he received his D.Phil. in 1972. From 1971 to 1973 he visited the Institute for Advanced Study and 1973/74 the Courant Institute of Mathematical Sciences of New York University. He then was a research fellow in Oxford and starting in 1979 tutor, lecturer and fellow of St Catherine's College. In 1990 he became a professor at the University of Warwick and in 1994 the Rouse Ball Professor of Mathematics at the University of Cambridge. In 1997 he was appointed to the Savilian Chair of Geometry at the University of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Supergravity In theoretical physics, supergravity (supergravity theory; SUGRA for short) is a modern field theory that combines the principles of supersymmetry and general relativity; this is in contrast to non-gravitational supersymmetric theories such as the Minimal Supersymmetric Standard Model. Supergravity is the gauge theory of local supersymmetry. Since the supersymmetry (SUSY) generators form together with the Poincaré algebra a superalgebra, called the super-Poincaré algebra, supersymmetry as a gauge theory makes gravity arise in a natural way. Gravitons Like any field theory of gravity, a supergravity theory contains a spin-2 field whose quantum is the graviton. Supersymmetry requires the graviton field to have a superpartner. This field has spin 3/2 and its quantum is the gravitino. The number of gravitino fields is equal to the number of supersymmetries. History Gauge supersymmetry The first theory of local supersymmetry was proposed by Dick Arnowitt and Pran Nath in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Projective Superspace In supersymmetry, a theory of particle physics, projective superspace is one way of dealing with \mathcal=2 supersymmetric theories, i.e. with 8 real SUSY generators, in a manifestly covariant manner. See also * Superspace Superspace is the coordinate space of a theory exhibiting supersymmetry. In such a formulation, along with ordinary space dimensions ''x'', ''y'', ''z'', ..., there are also "anticommuting" dimensions whose coordinates are labeled in Grassmann numb ... * Harmonic superspace References * Supersymmetry {{Quantum-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Martin Roček Martin Roček is a professor of theoretical physics at the State University of New York at Stony Brook and a member of the C. N. Yang Institute for Theoretical Physics. He received A.B. and Ph.D. degrees from Harvard University in 1975 and 1979. He did post-doctoral research at the University of Cambridge and Caltech before becoming a professor at Stony Brook University. He was one of the co-inventors of hyperkähler quotients, a hyperkahler analogue of Marsden–Weinstein reduction and the structure of Bihermitian manifolds. His research interests include supersymmetry, string theory and applications of generalized complex geometry In the field of mathematics known as differential geometry, a generalized complex structure is a property of a differential manifold that includes as special cases a complex structure and a symplectic structure. Generalized complex structures were ..., and with S. J. Gates, M. T. Grisaru, and W. Siegel, Rocek coauthored ''Superspace, or One thou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Hyperkähler Quotient In mathematics, the hyperkähler quotient of a hyperkähler manifold acted on by a Lie group ''G'' is the quotient of a fiber of a hyperkähler moment map M \to \mathfrak \otimes \mathbb^3 over a ''G''-fixed point by the action of ''G''. It was introduced by Nigel Hitchin, Anders Karlhede, Ulf Lindström Ulf Lindström (born 12 November 1947) is a Swedish theoretical physicist working in the fields of string theory, supersymmetry, and general relativity. He earned his fil. kand. university degree at Stockholm University in 1972 and continued un ..., and Martin Roček in 1987. It is a hyperkähler analogue of the Kähler quotient. References * Differential geometry {{differential-geometry-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]