Definition of "twistor" []

• Any of the complex-valued coordinates in twistor theory, which maps the geometric objects of conventional 3+1 space-time into geometric objects in a four-dimensional space, twistor space, with metric signature (2,2), a proposed path to a theory of quantum gravity. (noun)

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• "Accordingly, the strings now become complex curves — Riemann surfaces, to be specific — in twistor space!"
• "But in twistor theory, a light ray is defined as a single point in light-ray space, and a space-time point P is represented by the celestial sphere's worth of light rays through P " in other words by a complex curve (a Riemann sphere) running through light-ray space." link"
• "But in twistor theory, a light ray is defined as a single point in light-ray space, and a space-time point P is represented by the celestial sphere's worth of light rays through P — in other words by a complex curve (a Riemann sphere) running through light-ray space. link"