Oscillon preheating in full general relativity

Oscillons are dense nonperturbative objects that may be copiously produced in the preheating period after inflation. Oscillon preheatings are usually simulated with nonlinear matter interactions but in a rigid FLRW background, without taking into account the gravitational backreactions. We investigate the oscillon preheating scenario in full general relativity with a full numerical relativity scheme, 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.

Automated summary

Investigated the oscillon preheating scenario in full general relativity, and found that general-relativistic corrections can lead to the production of more and denser oscillons, potentially collapsing them into black holes in certain parameter regions.