Speaker
Lorenzo Boldorini
(Sapienza University of Rome)
Description
We study how the presence of an area gap, different than zero, affects the gravitational collapse of a dust ball in metric variables. The collapse is analyzed for both the flat and spherical Oppenheimer-Snyder models.
In both scenarios the formation of the singularity is avoided, due to the inversion of the velocity at finite values of the sphere surface. This can be attributed to the presence of a negative pressure, with origins at a quantum level, which is evident in metric variables.
The phenomenology concerning the collapse is analyzed in order to identify possible measurable effects that take place during the gravitational collapse.
Primary author
Lorenzo Boldorini
(Sapienza University of Rome)
