More on one-loop massless amplitudes of superstring theories.
More on one-loop massless amplitudes of superstring theories.
复制标题
DOI:
10.1103/physrevd.39.1626
复制
发表时间:
1989-03
期刊:
影响因子:
--
通讯作者:
Tsuchiya
中科院分区:
文献类型:
--
作者:
Tsuchiya
A systematic way of explicitly evaluating one-loop superstring amplitudes with M>4 external massless bosons is studied. In particular, we give an algorithm to derive various new theta-function identities which are useful for directly summing over spin structures of massless amplitudes. These identities make the validity of the cancellation mechanism of the dilaton tadpole divergence in higher-point amplitudes of type-I theory very transparent.