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The one-loop open superstring massless five-point amplitude with the non-minimal pure spinor formalism (2009)
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BibTeX
@MISC{Mafra09theone-loop,
author = {Carlos R. Mafra and Christian Stahn},
title = {The one-loop open superstring massless five-point amplitude with the non-minimal pure spinor formalism},
year = {2009}
}
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Abstract
We compute the massless five-point amplitude of open superstrings using the nonminimal pure spinor formalism and obtain a simple kinematic factor in pure spinor superspace, which can be viewed as the natural extension of the kinematic factor of the massless four-point amplitude. It encodes bosonic and fermionic external states in supersymmetric form and reduces to existing bosonic amplitudes when expanded in components, therefore proving their equivalence. We also show how to compute the kinematic structures involving fermionic states.
Keyphrases
non-minimal pure spinor formalism simple kinematic factor open superstring kinematic structure pure spinor superspace nonminimal pure spinor formalism massless four-point amplitude bosonic amplitude massless five-point amplitude fermionic external state natural extension fermionic state supersymmetric form kinematic factor
