论文标题
加利益人的尖锐起源及其小说极限
The Stringy Origins of Galileons and their Novel Limit
论文作者
论文摘要
我们展示了广义的galileons（Horndeski Gravity的一个特殊子类），是由渐变弦理论对$α'$的一阶的低能量有效作用的一致的kaluza-klein降低。这表明Horndeski的重力理论具有弦理论的起源。伽利略术语的形式是通过嵌入时空的参数精确固定的，因此仅弦理论允许Horndeski理论的特定子集。通过执行$α'$的尺寸重新缩放来考虑模型的新限制。
We show generalized Galileons -- a particular subclass of Horndeski gravity -- arise from a consistent Kaluza-Klein reduction of the low-energy effective action of heterotic string theory to first order in $α'$. This suggests Horndeski theories of gravity have a string-theoretic origin. The form of the Galileonic terms is precisely fixed by parameters of the embedding spacetime, so that only a specific subset of Horndeski theories is permitted by string theory. A novel limit of the model is considered by performing a dimensionful rescaling of $α'$.
