标题： 极端Kerr-Schild形式 显示英文标题

标题： Extremal Kerr-Schild Form

摘要： 我们提出一种新的假设，其中完整的黑洞几何被写成相关极端黑洞基底的质量扰动的线性形式。 与它的“标准”版本相反，相应的“极端Kerr-Schild形式”不再局限于特殊的代数类型时空，并且适用于许多带有物质的黑洞解，例如带电的Kerr-NUT-(A)dS时空、$D=5$最小规范超引力中的黑洞，或带电的标量-轴子旋转解。 该假设可能在黑洞扰动理论中找到应用，为非极端黑洞的CFT描述提供新的见解，并且有助于构建新的精确解。 显示英文摘要

摘要： We propose a novel ansatz, where the full black hole geometry is written as a linear in mass perturbation of the associated extremal black hole base. Contrary to its "standard" version, the corresponding "extremal Kerr-Schild form" is no longer restricted to special algebraic type spacetimes, and is applicable to numerous black hole solutions with matter, such as the charged Kerr-NUT-(A)dS spacetimes, black holes of $D=5$ minimal gauged supergravity, or the charged dilaton-axion rotating solutions. This ansatz is likely to find its applications in black hole perturbation theory, shed new light on the CFT description of non-extremal black holes, as well as be useful for constructing new exact solutions.