发表机构
Universidade Federal do Pará; Universidade Federal Fluminense; Universitat de Valencia; CSIC（帕拉联邦大学; 弗鲁米嫩塞联邦大学; 瓦伦西亚大学; 西班牙国家研究委员会）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究基于各向异性流体黑洞弹跳解，发现其弹跳处隐藏薄壳结构，并构建了由薄壳支撑最小面积弹跳的新解，该解源于度规简并性，可呈现规则黑洞或虫洞特征，并探讨了其热力学性质。
AI 中文摘要
Lessa 和 Olmo 最近提出了一类由各向异性流体驱动的黑洞弹跳解，其外部几何在一直延伸到最小面积弹跳处都再现了 Reissner-Nordström 几何。在本工作中，我们表明该解在弹跳处恰好隐藏了一个薄壳结构。受此观察启发，我们构建了一类新的具有静态球对称性的黑洞弹跳解，其特征是在薄壳支撑下出现最小面积弹跳。我们证明，这种非平凡的拓扑结构源于弹跳处度规的简并性，在那里逆度规变得无定义，导致曲率张量在该点恰好出现分布性不连续。因此，在弹跳处必然存在一个由违反能量条件的物质构成的 delta 函数薄壳。为了生成此类解，我们借鉴了预言存在基本最小长度尺度的量子引力提案，采用能有效编码这些量子引力效应的能量密度分布，将物质在最小长度尺度上的点状描述替换为涂抹描述。我们考虑了洛伦兹型和高斯型两种动机良好的分布，以生成一类新解，这些解展现出规则黑洞或虫洞的特征，其中心隐藏着薄壳弹跳。此外，我们还研究了这些致密天体的热力学性质。
英文摘要
A recently proposed class of black-bounce solutions sourced by anisotropic fluids, whose exterior reproduces the Reissner-Nordström geometry all the way down to a minimal-area bounce, was put forward by Lessa and Olmo. In this work, we show that this solution conceals a thin-shell structure precisely at the bounce. Motivated by this observation, we construct a new class of black-bounce solutions with static, spherical symmetry featuring the emergence of a minimal-area bounce supported by a thin shell. This nontrivial topological structure is shown to arise from the degeneracy of the metric at the bounce, where the inverse metric becomes ill-defined, leading to curvature tensors with distributional discontinuities precisely at that point. As a consequence, a delta-function thin shell of energy-condition-violating matter is necessarily present at the bounce. To generate such solutions, we draw on proposals from quantum gravity that predict the existence of a fundamental minimum length scale, employing energy density profiles that encode these quantum-gravitational effects in an effective manner, replacing the point-like description of matter at minimal-length scales with a smeared one. We consider two well-motivated profiles, of Lorentzian and Gaussian type, to generate a novel class of solutions exhibiting the features of either regular black holes or wormholes, whose center conceals a thin-shell bounce. In addition, we investigate the thermodynamics of these compact objects.
