Hi All

Chapline's theory doesn't change anything about "black holes" this side of the Event Horizon, therefore all the astrophysical observational details are (almost) the same as far as tidal forces and accretion disks go. What is different is what Chapline predicts lies on the other side of the Event Horizon and it seems to be similar to the "gravastar" model that was proposed not too long ago.

Basically a quantum phase transition occurs and there is no internal singularity. Pawel Mazur and Emil Mottola developed that theory and a newer version which retain the quantum transition boundary concept. And Pawel Mazur also worked with Chapline on similar ideas. Hence it's a family of theories.

In the current version of Chapline's theory (he published a similar e-print 5 years ago) nothing crosses the Event Horizon and collision with it causes particle decay. Thus there is potential for an observational signal which he discusses in the e-print.

Chapline mentions it might be a de Sitter space-time on the other side which is close to the gravastar model. I'm a bit unclear on what happens to the collapsar's original mass. Perhaps it becomes the internal field's energy? Gravastar mass is spread out as the ultra-thin boundary layer between our space-time and inside-out de Sitter space-time on the inside.

Interesting theorising - we'll have to see what observations say.

Adam