标题： 二维常规字符串黑洞通过完整的$α^{\prime}$修正 显示英文标题

标题： Two-dimensional regular string black hole via complete $α^{\prime}$ corrections

摘要： 在弦理论中，一个重要的挑战是证明黑洞的奇点是否可以通过完整的$\alpha^{\prime}$修正来平滑。 最简单的情况是考虑二维弦黑洞或三维黑洞弦。 这个问题在规范化的Wess-Zumino-Witten（WZW）模型中被讨论过，结果被认为在$\alpha^{\prime}$修正的所有阶次上都是正确的。 基于对分类所有$\alpha^{\prime}$修正的最近显著进展，在这项工作中，我们利用低能有效时空作用量重新研究了这个问题，并通过完整的$\alpha^{\prime}$修正提供了二维黑洞的一类精确非微扰且无奇点的解。 显示英文摘要

摘要： In string theory, an important challenge is to show if the singularity of black holes can be smoothed out by the complete $\alpha^{\prime}$ corrections. The simplest case is to consider a 2D string black hole or 3D black string. This problem was discussed in a gauged Wess-Zumino-Witten (WZW) model and the results are supposed to be correct to all orders in $\alpha^{\prime}$ corrections. Based on the recent remarkable progress on classifying all the $\alpha^{\prime}$ corrections, in this work, we re-study this problem with the low energy effective spacetime action, and provide classes of exact non-perturbative and non-singular solutions of the 2D black hole via complete $\alpha^{\prime}$ corrections.