Cornering the unphysical vertex

Details Cornering the unphysical vertex Cornering the unphysical vertex

2012-03-03

arxiv.org/abs/1203.0677v1

Physics

High Energy Physics

High Energy Physics - Theory

LaTeX 34pp

Scientific paper

In the pure spinor theory on AdS5xS5 there are some vertex operators which do not correspond to any physical excitations. We attempt to get better understanding of these unphysical vertices by studying their flat space limit. They escape by deforming the BRST structure of the flat space. We show that the BRST operator of the Type IIB superstring theory in flat space can be nontrivially deformed, and this fact plays some role in the study of the flat space limit of the sigma-model in the curved background.

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