Oscillons are dense objects that may be copiously produced in the preheating period after inflation, during which what role general relativity might play is largely unknown. We investigate the oscillon preheating scenario in full general relativity, and compare the general-relativistic simulations with the traditional ones done in an FLRW background. We find that in certain parameter regions the general-relativistic corrections are significant, producing more and denser oscillons, and can be strong enough to collapse the oscillons to black holes.

中文翻译：

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完全广义相对论中的振荡预热

振荡子是致密物体，可能在暴胀后的预热阶段大量产生，在此期间广义相对论可能会发挥什么作用在很大程度上是未知的。我们研究了完全广义相对论中的 oscillon 预热场景，并将广义相对论模拟与在 FLRW 背景下进行的传统模拟进行了比较。我们发现在某些参数区域中，广义相对论修正是显着的，产生更多和更密集的振荡，并且可以强大到足以将振荡坍缩成黑洞。