标题： 常规黑洞与无视界超致密恒星之间的联系 显示英文标题

标题： A connection between regular black holes and horizonless ultracompact stars

摘要： 我们说明了常规黑洞和无视界星体，通常被视为截然不同的黑洞模仿者家族，实际上是紧密交织在一起的。 我们表明，在引力能量（Misner--Sharp准局部质量）非负性的温和条件下，以及假设后者与Arnowitt--Deser--Misner（ADM）质量之间存在线性关系的情况下，任何球对称的常规黑洞都可以连续变形为无视界星体。 我们通过考虑Hayward提出的描述常规黑洞的几何家族来说明这一普遍结果，并且还描述了相应无视界星体的特性。 相关有效应力-能量张量的形式表明，这些无视界星体可以被识别为具有柔软表面和内部/外部光环的各向异性引力星。 我们还构建了可能描述常规黑洞向无视界星体演化的动态几何结构，并表明半经典物理包含触发这种动态演化早期阶段所需的基本要素。 显示英文摘要

摘要： We illustrate that regular black holes and horizonless stars, typically considered as quite distinct families of black hole mimickers, are intimately intertwined. We show that any spherically symmetric regular black hole can be continuously deformed into a horizonless star under the mild conditions of non-negativity of gravitational energy (Misner--Sharp quasi-local mass), and an assumed linear relation between the latter and the Arnowitt--Deser--Misner (ADM) mass. We illustrate this general result by considering the family of geometries proposed by Hayward as the description of regular black holes, and we also describe the properties of the corresponding horizonless stars. The form of the associated effective stress-energy tensor shows that these horizonless stars can be identified as anisotropic gravastars with a soft surface and inner/outer light rings. We also construct dynamical geometries that could describe the evolution of regular black holes towards horizonless stars, and show that semiclassical physics contains the necessary ingredients to trigger the early stages of such dynamical evolution.