标题： 相对论自引力流体中的腔演化 显示英文标题

标题： Cavity evolution in relativistic self-gravitating fluids

摘要： 我们研究了球对称相对论流体中腔体的演化，假设相邻流体单元之间的固有径向距离在其演化过程中保持恒定（纯面积演化条件）。 一般形式化方法被采用，并给出了解。 其中一些满足达姆瓦条件，而另一些则存在壳层，必须满足以色列条件，在一个或两个边界面上。 建议将这些结果应用于某些天体物理场景中。 显示英文摘要

摘要： We consider the evolution of cavities within spherically symmetric relativistic fluids, under the assumption that proper radial distance between neighboring fluid elements remains constant during their evolution (purely areal evolution condition). The general formalism is deployed and solutions are presented. Some of them satisfy Darmois conditions whereas others present shells and must satisfy Israel conditions, on either one or both boundary surfaces. Prospective applications of these results to some astrophysical scenarios is suggested.