论文标题
II型超弦理论的有效动作$α'^3 $：NS-NS耦合
Effective action of type II superstring theories at order $α'^3$: NS-NS couplings
论文作者
论文摘要
最近，已经表明，按$ b $ field，metric和dilaton处以$α'^3 $为872的量规数不变的耦合数为872。在特定方案中，这些耦合出现在55个不同的结构中。在本文中，最多达到总体因素，我们通过要求在圆圈上的耦合减少在T-偶数转换下是不变的，将所有参数固定在II型主管理论中。我们发现有445个非零耦合出现在15个不同的结构中。耦合与四点S-Matrix元素和非线性Sigma模型方法在文献中发现的部分耦合完全一致。
Recently, it has been shown that the minimum number of gauge invariant couplings for $B$-field, metric and dilaton at order $α'^3$ is 872. These couplings, in a particular scheme, appear in 55 different structures. In this paper, up to an overall factor, we fix all parameters in type II supertirng theories by requiring the reduction of the couplings on a circle to be invariant under T-duality transformations. We find that there are 445 non-zero couplings which appear in 15 different structures. The couplings are fully consistent with the partial couplings that have been found in the literature by the four-point S-matrix element and by the non-linear Sigma model methods.
