Multiparticle SYM equations of motion and pure spinor BRST blocks

Understand

In this paper a multiparticle generalization of linearized ten-dimensional super Yang--Mills superfields is proposed.

• Their equations of motions are shown to take the same form as in the single-particle case, supplemented by contact terms.
• A recursive construction of these superfields is inspired by the iterated OPEs among massless vertex operators in the pure spinor formalism.
• An enlarged set of BRST-covariant pure spinor blocks is then defined in a streamlined fashion and combined to multiparticle vertex operators.