We construct the unintegrated vertex operator at the first mass level of the open superstring
from the OPE of massless vertices. Using BRST cohomology manipulations, the tree …

A bstract By analogy with the formula for the massless string disk amplitudes, we define
massive field-theory tree amplitudes and conjecture that the BRST cohomology structure of …

A bstract In any type II superstring background, the supergravity vertex operators in the pure
spinor formalism are described by a gauge superfield. In this paper, we obtain for the first …

A bstract As a check of the first massive integrated vertex operator in the pure spinor
formalism constructed in arXiv: 1802.04486, we compute the one loop 2-point function of the …

A bstract Same amplitudes evaluated independently using RNS and pure spinor formalism
are expected to agree. While for massless states, this fact has been firmly established, for …

A bstract We construct the integrated vertex operator for the first massive states of open
superstrings with (mass) 2= 1/α′ in the pure spinor formalism of the superstring theory. This …

Constructing massive superstring vertex operators from massless vertex operators using the
pure spinor formalism - ScienceDirect Skip to main contentSkip to article Elsevier logo Journals …

We uncover a relation between the scattering amplitudes of massive strings and the
$\alpha'$ expansion of the massless string amplitude at tree level. More precisely, the n …

We provide a prescription for computing two-point tree-level amplitudes in the pure spinor
formalism that provides finite results that agree with the corresponding expression in the …

In any type II superstring background, the supergravity vertex operators in the pure spinor
formalism are described by a gauge superfield. In this paper, we obtain for the first time an …