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(Non)triviality of Pure Spinors and Exact Pure Spinor- RNS Map
, 2008
"... All the BRST-invariant operators in pure spinor formalism in d = 10 can be represented as BRST commutators, such as V = {Qbrst, θ+ λ+ V} where λ+ is the U(5) component of the pure spinor transforming as 1 5. Therefore, in order to secure non-triviality of BRST 2 cohomology in pure spinor string theo ..."
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All the BRST-invariant operators in pure spinor formalism in d = 10 can be represented as BRST commutators, such as V = {Qbrst, θ+ λ+ V} where λ+ is the U(5) component of the pure spinor transforming as 1 5. Therefore, in order to secure non-triviality of BRST 2 cohomology in pure spinor string