标题： S对偶振幅和D3-膜耦合 显示英文标题

标题： S-dual Amplitude and D3-Brane Couplings

摘要： 最近观察到，II类B散射振幅与S对偶的标准规则兼容。受此启发，我们将通过对一个Kalb-Ramond场和三个开弦的树级S矩阵元施加这种对称性，来找到一个Ramond-Ramond场和三个开弦的树级S矩阵元。我们还找到了一个SL(2, R)不变形式的D3-膜有效作用量，其中含有四个规范场，并带有导数修正，这个作用量是从一级圈四点振幅推导出来的。利用非线性SL(2, R)不变结构的展开式，我们在更高阶规范场的层次上找到了带有导数修正的作用量。 显示英文摘要

摘要： Recently, it has been observed that the IIB scattering amplitudes are compatible with the standard rules of S-duality. Inspired by this observation, we will find the tree-level S-matrix elements of one Ramond-Ramond and three open strings by imposing this symmetry on the tree-level S-matrix elements of one Kalb-Ramond and three open strings. We also find a SL(2, R) invariant form of the D3-brane effective action containing four gauge fields with derivative corrections that was derived from one-loop level four-point amplitude. Using the expansion of the nonlinear SL(2, R) invariant structures, we find the action with derivative corrections at the level of more gauge fields