Equivalence of Two - Loop Superstring Amplitudes in the Pure Spinor and RNS Formalisms
نویسنده
چکیده
The pure spinor formalism for the superstring has recently been used to compute massless four-point two-loop amplitudes in a manifestly super-Poincaré covariant manner. In this paper, we show that when all four external states are Neveu-Schwarz, the two-loop amplitude coincides with the RNS result.
منابع مشابه
Relating the Rns and Pure Spinor Formalisms for the Superstring
Recently, the superstring was covariantly quantized using the BRST-like operator Q = λ α d α where λ α is a pure spinor and d α are the fermionic Green-Schwarz constraints. By performing a field redefinition and a similarity transformation, this BRST-like operator is mapped to the sum of the Ramond-Neveu-Schwarz BRST operator and η 0 ghost. This map is then used to relate physical vertex operat...
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