Pure Spinor Approach to Type IIA Superstring Sigma Models and Free Differential Algebras

Details Pure Spinor Approach to Type IIA Superstring Sigma Models and Free Differential Algebras Pure Spinor Approach to Type IIA Superstring Sigma Models and Free Differential Algebras

2010-02-18

arxiv.org/abs/1002.3500v3

Physics

High Energy Physics

High Energy Physics - Theory

1+23 pages, v2: added clarifications and a reference, misprints corrected, v3: presentation improved, results unchanged

Scientific paper

This paper considers the Free Differential Algebra and rheonomic parametrization of type IIA Supergravity, extended to include the BRS differential and the ghosts. We consider not only the ghosts lambda's of supersymmetry but also the ghosts corresponding to gauge and Lorentz transformations. In this way we can derive not only the BRS transformations of fields and ghosts but also the standard pure spinor constraints on lambda's. Moreover the formalism allows to derive the action for the pure spinor formulation of type IIA superstrings in a general background, recovering the action first obtained by Berkovits and Howe.

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