论文标题
对小黑环的更高衍生校正
Higher-derivative corrections to small black rings
论文作者
论文摘要
我们对一般的超对称异质背景的一般家族计算了一阶$α'$ - 校正，该家族描述了基本弦和动量波的旋转叠加。我们专注于该家族中的一种特定解决方案，该解决方案将维度降低到五个维度时，将其提升到一个带有两个电荷的黑环和一个偶极子，该偶极子具有奇异的地平线，在超级强度近似中具有消失的区域，更称为小黑环。我们表明，即使考虑到一阶$α'$ - 校正已考虑到地平线的奇异性。这意味着与文献中所论证的相反，更高衍生的校正不能解决5维小黑环的奇异视野，至少在$α'$中的一阶。
We compute the first-order $α'$-corrections to a general family of supersymmetric heterotic backgrounds which describes a rotating superposition of a fundamental string and a momentum wave. We focus on a particular solution within this family that gives raise, upon dimensional reduction to five dimensions, to a black ring with two charges and one dipole that has a singular horizon with vanishing area in the supergravity approximation, better known as small black ring. We show that the singularity at the horizon persists even after the first-order $α'$-corrections have been taken into account. This implies, contrary to what has been argued in the literature, that higher-derivative corrections do not resolve the singular horizon of the 5-dimensional small black ring, at least at first-order in $α'$.
