Berkovits, Nathan [UNESP]2014-05-272014-05-272000-12-01Journal of High Energy Physics, v. 4, n. 4, 2000.1029-8479http://hdl.handle.net/11449/66318Using pure spinors, the superstring is covariantly quantized. For the first time, massless vertex operators are constructed and scattering amplitudes are computed in a manifestly ten-dimensional super-Poincaré covariant manner. Quantizable non-linear sigma model actions are constructed for the superstring in curved backgrounds, including the AdS 5 × S 5 background with Ramond-Ramond flux.engSpace-Time SymmetriesSuperstrings and Heterotic StringsArtigo10.1088/1126-6708/2000/04/018WOS:000088805700018Acesso restrito2-s2.0-6944240450