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# Some superstring amplitude computations with the non-minimal pure spinor formalism

Berkovits, Nathan and Mafra, Carlos R. (2006) Some superstring amplitude computations with the non-minimal pure spinor formalism. Journal of High Energy Physics, 1-17.

Record type: Article

## Abstract

We use the non-minimal pure spinor formalism to compute in a super-Poincare covariant manner the four-point massless one and two-loop open superstring amplitudes, and the gauge anomaly of the six-point one-loop amplitude. All of these amplitudes are expressed as integrals of ten-dimensional superfields in a "pure spinor superspace" which involves five $\theta$ coordinates covariantly contracted with three pure spinors. The bosonic contribution to these amplitudes agrees with the standard results, and we demonstrate identities which show how the $t_8$ and $\epsilon_{10}$ tensors naturally emerge from integrals over pure spinor superspace.

Text
0607187v1 - Accepted Manuscript

Published date: 27 November 2006
Additional Information: 20 pages, harvmac tex
Keywords: hep-th

## Identifiers

Local EPrints ID: 434942
URI: http://eprints.soton.ac.uk/id/eprint/434942
ISSN: 1029-8479
ORCID for Carlos R. Mafra: orcid.org/0000-0001-9842-9654

## Catalogue record

Date deposited: 16 Oct 2019 16:30

## Contributors

Author: Nathan Berkovits
Author: Carlos R. Mafra