Speaker
Nicklas Ramberg
(Istituto Nazionale di Fisica Nucleare)
Description
In this talk we will discuss a new classical mechanism for bubble nucleation which relies on collapsing boson stars with attractive self-interactions. The phenomena can occur provided dense boson stars are formed in the false vacuum. As the boson star collapse the field value inside the stars core gets significantly enhanced and can classically roll over the potential barrier. Hence the star explodes as true vacuum bubbles and induce a cosmological phase transition. This mechanism reveals the possibility that vacua which are stable against quantum tunneling may be susceptible to astrophysical processes.
Authors
ALEKSANDR AZATOV
(Istituto Nazionale di Fisica Nucleare)
Nicklas Ramberg
(Istituto Nazionale di Fisica Nucleare)
Takeshi Kobayashi
(SISSA)