Berkovits, Nathan [UNESP]2014-05-272014-05-272005-02-01Journal of High Energy Physics, n. 2, p. 1489-1497, 2005.1029-84791126-6708http://hdl.handle.net/11449/68122A relation is found between nonlocal conserved charges in string theory and certain ghost-number two states in the BRST cohomology. This provides a simple proof that the nonlocal conserved charges for the superstring in an AdS 5 × S5 background are BRST-invariant in the pure spinor formalism and are κ-symmetric in the Green-Schwarz formalism. © SISSA/ISAS 2005.1489-1497engAdS-CFT and dS-CFT CorrespondenceBRST SymmetryArtigo10.1088/1126-6708/2005/02/060WOS:000228861300060Acesso restrito2-s2.0-27344437513