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

TL;DR

This paper proposes a new string theory in twistor space for N=4 super-Yang-Mills that derives tree-level amplitudes from open string tree diagrams, differing from previous D-instanton based models.

Contribution

It introduces an alternative twistor string theory where tree-level amplitudes are obtained from open string diagrams, offering a different approach from Witten's D-instanton-based model.

Findings

Tree-level super-Yang-Mills amplitudes derived from open string tree diagrams.

Manifest spacetime superconformal invariance maintained.

Provides a different perspective on twistor string formulations.

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.