We study strongly supercooled cosmological phase transitions. We perform numerical lattice simulations of two-bubble collisions and demonstrate that, depending on the scalar potential, in the collision the field can either bounce to a false vacuum or remain oscillating around the true vacuum. We study if these cases can be distinguished from their gravitational wave signals and discuss the possibility of black hole formation in the bubble collisions.

中文翻译：

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关于强过冷相变中的气泡碰撞

我们研究了强过冷的宇宙学相变。我们执行了两次气泡碰撞的数值晶格模拟，并证明了根据标量势，在碰撞中，磁场可能会反弹至虚假真空或保持围绕真实真空振荡。我们研究了这些情况是否可以与重力波信号区分开，并讨论了气泡碰撞中形成黑洞的可能性。