| 释义 | twistor in British English (ˈtwɪstə) noun physics a complex variable corresponding to the coordinates of a point in space and timeWe describe briefly the basic ideas and results of the twistor theory.To support rigid supersymmetry, such backgrounds have to admit twistor spinors.The results indicate that the twistor-based sliding mode controller can ensure global asymptotic stability.In this picture, twistor space provides a fully nonlocal, gauge-invariant description underlying both bulk and boundary spacetime pictures.The solutions presented are obtained by using a method of holomorphic factorization in noncommutative twistor space and gauge functions.An extension of the usual spinor helicity formalism allows us to encode these scattering states efficiently in terms of ‘twistor-spinors'.I present some recollections of that period; mostly how we were influenced by the twistor approach.Twistor-string-like formulas are proposed for tree-level scattering amplitudes of all multiplicities for each of these theories.Examples of 'twistor' in a sentencetwistor |