# Twistor String Theory

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String Theory
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All Roads Lead to String Theory (Polchinski)
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Prior to the First Superstring Revolution
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Early History
| S-Matrix Theory Regge Trajectory | |

Bosonic String Theory
| Worldsheet String Bosonic String Theory String Perturbation Theory Tachyon Condensation | |

Supersymmetric Revolution
| Supersymmetry RNS Formalism GS Formalism BPS | |

Superstring Revolutions
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First Superstring Revolution
| GSO Projection Type II String Theory Type IIB String Theory Type IIA String Theory Type I String Theory Type H String Theory Type HO String Theory Type HE String Theory | |

Second Superstring Revolution
| T-Duality D-Brane S-Duality Horava-Witten String Theory M-Theory Holographic Principle N=4 Super-Yang-Mills Theory AdS CFT BFSS Matrix Theory Matrix String Theory (2,0) Theory Twistor String TheoryF-Theory String Field Theory Pure Spinor Formalism | |

After the Revolutions
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Phenomenology
| String Theory Landscape Minimal Supersymmetric Standard Model String Phenomenology | |

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**Twistor String theory** is an equivalence between Supersymmetric Yang-Mills theory and the peturbative Topological *B* model string theory in twistor space]
^{[1]}
It was initially proposed by Witten in 2003. This is considered a major breakthrough by many as till Witten's 2003 paper, Twistor theory was only applicable to Classical General Relativity. ^{[2]}

Since the dimensionality of Twistor space is necessarily the same as 4-dimensional spacetime with metric signature , i.e. 1 time and 3 space, this is also a way to do away with the extra dimensions of String Theory.

## ReferencesEdit this section

- ↑
Witten, Edward (December 2003). "Perturbative Gauge Theory As A String Theory In Twistor Space:".
*Communications in Mathematical Physics*. 1**252**(1): 189–258. doi:10.1007/s00220-004-1187-3. http://arxiv.org/pdf/hep-th/0312171v2.pdf. Retrieved 10 July 2013. - ↑ Penrose, Roger; McCallum M.A.H. (9 June 1972). "Twistor Theory: An Approach to the Quantisation of Fields and Space-Time".
*Physics Reports (Section C of Physics Letters)*. 1972**6**(4): 241-316.