BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:What’s inside a black hole? - Ram Brustein (Ben-Gurion Universit
 y)
DTSTART:20241018T120000Z
DTEND:20241018T130000Z
UID:TALK223111@talks.cam.ac.uk
CONTACT:Daniela Cors
DESCRIPTION:I will present general arguments\, based on fundamental physic
 s principles\, as to why we should expect a significant\, horizon scale\, 
 departure from semiclassical gravity inside astrophysical black holes. The
 n\, I will present a simple model which realizes this idea: the frozen sta
 r model.  I will show that a static frozen star looks exactly like a Schwa
 rzschild black hole to an external observer and that it is sourced by a 
 “string fluid”. Then I will show that frozen stars can form dynamicall
 y from collapsing ``normal" matter via a quantum phase transition. The dur
 ation of this transition is estimated and shown to be consistent with caus
 ality. Time allowing\, I will discuss the observational signatures of froz
 en stars relevant to gravitational wave experiments.
LOCATION:Potter room / https://cam-ac-uk.zoom.us/j/87235967698
END:VEVENT
END:VCALENDAR