标题： 杨-米尔斯代数和顶点算符的对称变换 显示英文标题

标题： Yang-Mills algebra and symmetry transformations of vertex operators

摘要： SUGRA运动方程的线性化解在纯自旋子形式中由顶点算符描述。 在超对称变换下，它们仅在BRST精确项的意义下协变。 我们确定了阻碍精确协变性的上同调类。 通过使用二次代数的形式主义，计算得到了简化。 显示英文摘要

摘要： Linearized solutions of SUGRA equations of motion are described in the pure spinor formalism by vertex operators. Under supersymmetry transformations, they transform covariantly only up to BRST exact terms. We identify the cohomology class which is the obstacle for exact covariance. Computations are simplified by using the formalism of quadratic algebras.