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arXiv 1406.4172hep-th
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弦盘放大器的次超前软因子

Subleading Soft Factor for String Disk Amplitudes

Burkhard U. W. Schwab

摘要:

研究了在有限弦张力下,存在软外动量时超弦盘散射振幅的行为。证明了对次主导软因子$S^{(1)}$的场论形式不存在$α'$ -修正。最后,我们还讨论了利用我们的结果和KLT关系在闭弦论中寻找相应的次主导软因子的可能性。

英文摘要:

We investigate the behavior of superstring disk scattering amplitudes in the presence of a soft external momentum at finite string tension. We prove that there are no $α'$-corrections to the field theory form of the subleading soft factor $S^{(1)}$. At the end of this work, we also comment on the possibility to find the corresponding subleading soft factors in closed string theory using our result and the KLT relations.

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