nLab
pure spinor

Idea

A pure spinor is a spinors with vanishing spinor-to-vector pairing

$$\overline{\psi} \Gamma^a \psi \;=\; 0 \,.$$

References

See also

• Wikipedia, Pure spinor

Discussion of superstring scattering amplitudes in terms of pure spinors:

• Carlos Mafra, Oliver Schlotterer, Towards the $n$-point one-loop superstring amplitude I: Pure spinors and superfield kinematics (arXiv:1812.10969)

• Carlos Mafra, Oliver Schlotterer, Towards the $n$-point one-loop superstring amplitude II: Worldsheet functions and their duality to kinematics (arXiv:1812.10970)

• Carlos Mafra, Oliver Schlotterer, Towards the $n$-point one-loop superstring amplitude III: One-loop correlators and their double-copy structure (arXiv:1812.10971)

Relation to picture changing operators:

• Andrei Mikhailov, Dennis Zavaleta, Geometrical framework for picture changing operators in the pure spinor formalism (arXiv:2003.13995)