The overall coefficient of the two-loop superstring amplitude using pure spinors
The overall coefficient of the two-loop superstring amplitude using pure spinors
复制标题
使用纯旋量的二环超弦振幅的总体系数
DOI:
10.1007/jhep05(2010)017
复制
发表时间:
2010
影响因子:
5.4
通讯作者:
Carlos R. Mafra
中科院分区:
文献类型:
--
作者:
Humberto Gomez;Carlos R. Mafra
Using the results recently obtained for computing integrals over (non-minimal) pure spinor superspace, we compute the coefficient of the massless two-loop four-point amplitude from first principles. Contrasting with the mathematical difficulties in the RNS formalism where unknown normalizations of chiral determinant formulæ force the two-loop coefficient to be determined only indirectly through factorization, the computation in the pure spinor formalism can be smoothly carried out.
DOI:
10.1016/j.cpc.2010.04.009
发表时间:
2010
期刊:
Comput. Phys. Commun.
影响因子:
--
作者:
M. Tentyukov;J. A. M. Vermaseren
通讯作者:
J. A. M. Vermaseren