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Twistor theory was originally developed by Sir Roger Penrose in 1967, it is a mathematical theory that seeks to describe the geometry of four dimensional real space-time via the geometry of 4-dimensional complex space with metric signature (2,2).
Twistor space has also been used by Edward Witten to efficiently calculate the scattering amplitude of Feynman diagrams.
==External links==
* [http://users.ox.ac.uk/~tweb/00001/index.shtml Roger Penrose - ''On the Origins of Twistor Theory'']
* [http://users.ox.ac.uk/~tweb/00002/index.shtml Roger Penrose - ''The Central Programme of Twistor Theory'']
* [http://users.ox.ac.uk/~tweb/00003/index.shtml Richard Jozsa - ''Applications of Sheaf Cohomology in Twistor Theory'']
* [http://users.ox.ac.uk/~tweb/00004/ Fedja Hadrovich - ''Twistor primer'']
Twistor space has also been used by Edward Witten to efficiently calculate the scattering amplitude of Feynman diagrams.
==External links==
* [http://users.ox.ac.uk/~tweb/00001/index.shtml Roger Penrose - ''On the Origins of Twistor Theory'']
* [http://users.ox.ac.uk/~tweb/00002/index.shtml Roger Penrose - ''The Central Programme of Twistor Theory'']
* [http://users.ox.ac.uk/~tweb/00003/index.shtml Richard Jozsa - ''Applications of Sheaf Cohomology in Twistor Theory'']
* [http://users.ox.ac.uk/~tweb/00004/ Fedja Hadrovich - ''Twistor primer'']