论文标题
最小量规不变耦合在订单$α'^3 $：NS-NS字段
Minimal gauge invariant couplings at order $α'^3$: NS-NS fields
论文作者
论文摘要
删除现场重新定义，Bianchi身份和从规格不变的NS-NS耦合的一般形式$α'^3 $中的总形式，我们发现最小独立耦合数为872。 $ r，\，r_ {μν}，\，\nabla_μH^{μαβ} $，$ \nabla_μμ\ nabla^μφ$。在这些方案中，除一个术语外，有一些子框架，耦合不能具有两个以上衍生物的术语。在我们选择的子气管中，872耦合出现在55个不同的结构中。我们通过其相应的四点函数来修复II型取代理论中的一些参数。具有两个以上衍生物的术语的耦合受四点函数的限制为零。
Removing the field redefinitions, the Bianchi identities and the total derivative freedoms from the general form of gauge invariant NS-NS couplings at order $α'^3$, we have found that the minimum number of independent couplings is 872. We find that there are schemes in which there is no term with structures $R,\,R_{μν},\,\nabla_μH^{μαβ}$, $ \nabla_μ\nabla^μΦ$. In these schemes, there are sub-schemes in which, except one term, the couplings can have no term with more than two derivatives. In the sub-scheme that we have chosen, the 872 couplings appear in 55 different structures. We fix some of the parameters in type II supersting theory by its corresponding four-point functions. The coupling which has term with more than two derivatives is constraint to be zero by the four-point functions.
