One-loop adjoint masses for non-supersymmetric intersecting branes
One-loop adjoint masses for non-supersymmetric intersecting branes
复制标题
非超对称相交膜的单环伴随质量
DOI：
10.1007/jhep08(2011)120
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发表时间：
2011
影响因子：
5.4
通讯作者：
Alessandro Vichi
中科院分区：
文献类型：
--
作者：
P. Anastasopoulos;I. Antoniadis;K. Benakli;M. Goodsell;Alessandro Vichi
我们考虑在相交的D-膜构型中，通过角度与其超对称值的微小偏差来打破超对称性。我们计算了膜世界体积上伴随标量辐射修正所产生的质量。在开弦通道中，弦两点函数只接受红外线和紫外线限值的贡献。后者是由于树级闭合弦未消除的NS-NS蝌蚪，我们从有效的Born-Infeld作用中显式地复制了它们。另一方面，红外区通过信使及其Kaluza-Klein激发重现了有效规范理论中超对称破缺的单圈调解。在这里讨论的环形结构中，它只接受来自N ≈ 4和N ≈ 2超对称组态的贡献，因此总是在前级引导到快子方向，这与有效场论的预期一致。
We consider breaking of supersymmetry in intersecting D-brane configurations by slight deviation of the angles from their supersymmetric values. We compute the masses generated by radiative corrections for the adjoint scalars on the brane world-volumes. In the open string channel, the string two-point function receives contributions only from the infrared and the ultraviolet limits. The latter is due to tree-level closed string uncanceled NS-NS tadpoles, which we explicitly reproduce from the effective Born-Infeld action. On the other hand, the infrared region reproduces the one-loop mediation of supersymmetry breaking in the effective gauge theory, via messengers and their Kaluza-Klein excitations. In the toroidal set-up considered here, it receives contributions only from N ≈ 4 and N ≈ 2 supersymmetric configurations, and thus always leads at leading order to a tachyonic direction, in agreement with effective field theory expectations.