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The oneloop open superstring massless fivepoint amplitude with the nonminimal pure spinor formalism
, 2009
"... We compute the massless fivepoint 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 fourpoint amplitude. It encodes bosonic a ..."
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Cited by 15 (6 self)
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We compute the massless fivepoint 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 fourpoint 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.
The Overall Coefficient of the Twoloop Superstring Amplitude Using
 Pure Spinors,” JHEP 1005, 017
, 2010
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Towards Field Theory Amplitudes From the Cohomology of Pure Spinor Superspace,” arXiv:1007.3639 [hepth
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Oneloop Superstring Amplitude From Integrals on
 Pure Spinors Space,” JHEP 0912 (2009) 034. [arXiv:0910.3405 [hepth
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Simplifying the Treelevel Superstring Massless Fivepoint Amplitude
, 2009
"... We use the pure spinor formalism to obtain the supersymmetric massless fivepoint amplitude at treelevel in a streamlined fashion. We also prove the equivalence of an OPE identity in string theory with a subset of the BernCarrascoJohansson fivepoint kinematic relations, and demonstrate how the r ..."
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Cited by 7 (3 self)
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We use the pure spinor formalism to obtain the supersymmetric massless fivepoint amplitude at treelevel in a streamlined fashion. We also prove the equivalence of an OPE identity in string theory with a subset of the BernCarrascoJohansson fivepoint kinematic relations, and demonstrate how the remaining BCJ identities follow from the different integration regions over the open string worldsheet, therefore providing a first principles derivation of the (supersymmetric) BCJ identities.