Speaker
Description
In this talk, we will elaborate on the possibility of quantum tunneling in dense axion stars during their evolution towards a bosenova. This mechanism is possible provided the nucleated bubble does not exceed the field profile of the axion during a bosenova. We provide an illustrative example revealing that there is a stringent condition on the size of the critical bubble which needs to be fulfilled for tunneling to be possible. With this potential mechanism in mind, we will comment on further phenomenological applications as these dense stars can act like seeds for bubble nucleation. Hence these dense structures if present in the early universe may be tightly constrained due to their potential impact on the Higgs field if there are mediator interactions present.
