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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Untwisting the pure spinor formalism to the RNS and twistor string in a flat and AdS(5) x S-5 background

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Autor(es):
Berkovits, Nathan
Número total de Autores: 1
Tipo de documento: Artigo Científico
Fonte: Journal of High Energy Physics; n. 6 JUN 21 2016.
Citações Web of Science: 5
Resumo

The pure spinor formalism for the superstring can be formulated as a twisted N=2 worldsheet theory with fermionic generators j(BRsT) and composite b ghost. After untwisting the formalism to an N=1 worldsheet theory with fermionic stress tensor j(BRsT) + b, the worldsheet variables combine into N=1 worldsheet superfields X-m and Theta(alpha) together with a superfield constraint relating DXm and D Theta(alpha). The constraint implies that the worldsheet superpartner of theta(alpha) is a bosonic twistor variable, and different solutions of the constraint give rise to the pure spinor or extended RNS formalisms, as well as a new twistor-string formalism with manifest N=1 worldsheet supersymmetry. These N=1 worldsheet methods generalize in curved Ramond-Ramond backgrounds, and a manifestly N=1 worldsheet supersymmetric action is proposed for the superstring in an AdS(5) x S-5 background in terms of the twistor superfields. This AdS(5) x S-5 worldsheet action is a remarkably simple fermionic coset model with manifest PSU(2, 2 vertical bar 4) symmetry and might be useful for computing AdS(5) x S-5 superstring scattering amplitudes. (AU)

Processo FAPESP: 14/18634-9 - Dualidade gravitação/Teoria de Gauge
Beneficiário:Victor de Oliveira Rivelles
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 11/11973-4 - ICTP Instituto Sul-Americano para Pesquisa Fundamental: um centro regional para física teórica
Beneficiário:Nathan Jacob Berkovits
Linha de fomento: Auxílio à Pesquisa - Temático