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N. Berkovits & L. Motl, Cubic Twistorial String Field Theory,

hep-th/0403187

I have to admit that I am (still) not familiar with strings in

twistor space, so let me ask a stupid question:

What about worldsheet supersymmetry? Is there any? If yes, why does the

BRST operator look the way it does in equation (2.4)? If not, why can we

still have a relation to SYM?

Another question: I have a basic understanding of ordinary cubic

bosonic open string field theory. What is, heuristically, the physical

interpretation of the new cubic interaction term in equation (3.19)?

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# Twistorial String Field Theory

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