The overall coefficient of the two-loop superstring amplitude using pure spinors

The overall coefficient of the two-loop superstring amplitude using pure spinors
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使用纯旋量的二环超弦振幅的总体系数

DOI:
10.1007/jhep05(2010)017
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发表时间:
2010
影响因子:
5.4
通讯作者:
Carlos R. Mafra
Carlos R. Mafra
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Humberto Gomez;Carlos R. Mafra

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利用最近在(非最小)纯旋量超空间上计算积分的结果,我们从第一原理出发计算了无质量两圈四点振幅的系数。与RNS形式中手征行列式的未知归一化迫使双圈系数只能通过因式分解间接确定的数学困难相比,纯旋量形式下的计算可以顺利进行。
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.
FORM 的多线程版本
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