标题： 创建具有厚壁的宇宙 显示英文标题

标题： Creating universes with thick walls

摘要： 我们研究了一个球对称的假真空泡在由“厚壁”分隔的真真空区域中的动力学，该“厚壁”由四次势中的标量场产生。 我们通过构建与该过程相关的数值解来研究“Farhi-Guth-Guven”（FGG）量子隧穿过程。 计算了时空的ADM质量，并表明存在一个下限，该下限是标量场质量的重要部分。 我们认为，一些人用来反对FGG过程物理性的零质量解是早期工作中使用的薄壁近似的人工产物。 我们认为，不应使用零质量解来质疑FGG过程的可行性。 显示英文摘要

摘要： We study the dynamics of a spherically symmetric false vacuum bubble embedded in a true vacuum region separated by a "thick wall", which is generated by a scalar field in a quartic potential. We study the "Farhi-Guth-Guven" (FGG) quantum tunneling process by constructing numerical solutions relevant to this process. The ADM mass of the spacetime is calculated, and we show that there is a lower bound that is a significant fraction of the scalar field mass. We argue that the zero mass solutions used to by some to argue against the physicality of the FGG process are artifacts of the thin wall approximation used in earlier work. We argue that the zero mass solutions should not be used to question the viability of the FGG process.