Thresholds for intersecting D-branes revisited
Thresholds for intersecting D-branes revisited
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DOI：
10.1016/j.physletb.2007.06.060
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发表时间：
2007-05
影响因子：
4.4
通讯作者：
Nikolas Akerblom;R. Blumenhagen;D. Lust;M. Schmidt-Sommerfeld
中科院分区：
文献类型：
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作者：
Nikolas Akerblom;R. Blumenhagen;D. Lust;M. Schmidt-Sommerfeld
本文重新考虑了在环形轨道褶皱背景下相交D6膜弦模型的规范阈值修正。通过尺寸正则化出现在树通道的开弦单圈图以及相应的环通道单圈图的zeta函数正则化，我们得到一个结果，该结果考虑了在规范耦合常数的运行中无质量状态的贡献以及状态的贡献，这在模空间的某些区域成为光的红外发散。
Gauge threshold corrections for intersecting D6-brane string models on toroidal orbifold backgrounds are reconsidered. Both by dimensionally regularising the appearing open string one-loop diagrams in tree-channel as well as by zeta-function regularisation of the corresponding loop-channel one-loop diagrams, we arrive at a result which takes into account the infrared divergence from the contribution of the massless states in the running of the gauge coupling constant as well as the contribution of states, which become light in certain regions of the moduli space.