In this project, we shall analyze vacuum effects in the context of quantum field theory in spherically symmetric spacetimes. We shall give special attention to the recently unveiled "vacuum awakening effect". Among the main avenues to be explored, we emphasize the question whether or not other fields beyond the Klein-Gordon one are able to awake the vacuum, leading to semiclassical instabilities (and, if so, we shall wonder in what conditions such instabilities would be triggered). Moreover, we shall search for neutron star astrophysical data to rule out the existence of some free fields about which almost nothing can be presently said, since they do not interact with ordinary matter with which particle detectors are manufactured. In spite of it, because of the equivalence principle they must interact with gravity and be sensitive to the vacuum awakening effect.
News published in Agência FAPESP Newsletter about the scholarship: