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An Alternative String Theory in Twistor Space for N=4 Super-Yang-Mills

Nathan Berkovits
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Abstract

In this letter, an alternative string theory in twistor space is proposed for describing perturbative N=4 super-Yang-Mills theory. Like the recent proposal of Witten, this string theory uses twistor worldsheet variables and has manifest spacetime superconformal invariance. However, in this proposal, tree-level super-Yang-Mills amplitudes come from open string tree amplitudes as opposed to coming from D-instanton contributions.

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Nathan Berkovits. 2004-02-05. An Alternative String Theory in Twistor Space for N=4 Super-Yang-Mills. https://doi.org/10.1103/physrevlett.93.011601

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