发表机构
Instituto Federal de Educação, Ciência e Tecnologia do Ceará (IFCE); Universidade Federal do Cariri (UFCA); Instituto de Astrofísica e Ciências do Espaço, Faculdade de Ciências da Universidade de Lisboa; Departamento de Física, Faculdade de Ciências da Universidade de Lisboa（塞阿拉联邦教育、科学与技术学院; 卡拉伊里联邦大学; 里斯本大学理学院空间科学与天体物理研究所; 里斯本大学理学院物理学系）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究受黑洞解启发，在宇宙空洞内构建薄壳虫洞，通过交界条件获表面应力及能量条件组合，发展其热力学并推导第一定律，用有效势研究径向动力学及稳定性，数值结果显示不同气体支持下虫洞稳定性不同，连接了空洞与虫洞形式主义。
AI 中文摘要
宇宙空洞是低密度区域，能提供具有类德西特引力行为的有效大尺度环境。受近期嵌入空洞密度分布的黑洞解启发，我们通过在宇宙空洞内粘贴黑洞正 lapse 区域的两个副本构建对称薄壳虫洞。从 Darmois - Israel 交界条件获得表面应力，并根据空洞质量函数和密度直接写出相应的零、弱、主导和强能量条件组合。进一步发展静态壳的热力学，推导将壳熵与黑洞和类宇宙学视界相关联的第一定律。通过有效势制定喉部的径向动力学，并研究壳上奇异物质服从广义宇宙查普利金气体或修正宇宙查普利金气体状态方程时静态构型的局部稳定性。数值结果表明，广义宇宙查普利金气体支持的构型通常不稳定，而修正宇宙查普利金气体支持的虫洞在状态方程中有足够大的线性项时可以稳定。所得框架将宇宙空洞的类德西特结构与标准薄壳虫洞形式主义联系起来，为识别位于空洞时空黑洞和类宇宙学视界之间的稳定或不稳定虫洞构型提供了起点。
英文摘要
Cosmic voids are underdense regions that can provide an effective large-scale environment with a de Sitter-like gravitational behavior. Motivated by recent black-hole solutions embedded in void density profiles, we construct a symmetric thin-shell wormhole by gluing two copies of the positive-lapse region of a black hole inside a cosmic void. The surface stresses are obtained from the Darmois--Israel junction conditions, and the corresponding null, weak, dominant, and strong energy-condition combinations are written directly in terms of the void mass function and density profile. We further develop the thermodynamics of the static shell, deriving a first law that relates the shell entropy to the black-hole and cosmological-like horizon entropies. We then formulate the radial dynamics of the throat through an effective potential and study the local stability of static configurations when the exotic matter on the shell obeys either a generalized cosmic Chaplygin gas or a modified cosmic Chaplygin gas equation of state. In both models the Chaplygin parameter $B$ is fixed by the static junction condition, so that the remaining stability test is governed by the void geometry and by the equation-of-state parameters. Numerical results reveal that GCCG-supported configurations are generically unstable, whereas MCCG-supported wormholes can be stable for a sufficiently large linear term in the equation of state. The resulting framework connects the de Sitter-like structure of cosmic voids with the standard thin-shell wormhole formalism and provides a starting point for identifying stable or unstable wormhole configurations located between the black-hole and cosmological-like horizons of the void spacetime.
Comments21 pages, 6 figures
Journal refEur. Phys. J. C 86, 1021 (2026)
DOI：10.1140/epjc/s10052-026-16272-0
