arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0810.2256hep-th
收藏

快子与费米子的耦合

Tachyon Couplings to Fermion

Mohammad R. Garousi

摘要:

通过固定快子和无质量Ramond顶点算符在不同图象中的内CP因子,我们证明了在非BPS D-膜/D-膜-反D-膜的世界体积中,两个费米子的圆盘级S-矩阵元和奇数个快子顶点算符的内CP因子为零.计算了两个费米子和两个快子的具有非零内CP因子的S矩阵元,并求出了这种振幅的动量展开式。在阿贝尔情况下,我们比较了两个费米子-两个快子耦合在低能量与相应的耦合规范固定的超对称快子DBI行动。两种情况下的耦合完全相同。

英文摘要:

By fixing the internal CP factor of tachyon and massless Ramond vertex operators in different pictures, we have shown that the internal CP factor of the disk level S-matrix elements of two fermions and odd number of tachyon vertex operators in the world volume of non-BPS D-branes/D-brane-anti-D-brane is zero. We have calculated the S-matrix element of two fermions and two tachyons which has non vanishing internal CP factor, and found the momentum expansion of this amplitude. In the abelian case, we have compared the two-fermion-two-tachyon coupling at low energy with the corresponding coupling in the gauge-fixed supersymmetric tachyon DBI action. The couplings in the two cases are exactly the same.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑