BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:What’s the (Quantum) Matter with Black Holes?
DTSTART:20260609T193000Z
DTEND:20260609T203000Z
DTSTAMP:20260615T210700Z
UID:indico-event-33133@indico.bnl.gov
CONTACT:rob.pisarski@gmail.com
DESCRIPTION:Speakers: Emil Mottola\n\nAbstract: Classical General Relativi
 ty together with conventional equations of state suggest that in complete 
 gravitational collapse a singular state of matter with infinite density co
 uld be reached\, to what is popularly called a “black hole.” In additi
 on to its interior singularities\, in which space and time itself are cru
 shed out of existence\, the main characteristic feature of a black hole is
  its apparent horizon\, the surface of finite area at which outwardly dir
 ected light rays are first trapped. The loss of information to the outsid
 e world this implies gives rise to additional difficulties with well-estab
 lished principles of quantum mechanics and statistical physics.\nGravitati
 onal vacuum condensate stars (‘gravastars’) provide a resolution of th
 ese paradoxes\, within an effective field theory (EFT) approach to gravity
  similar to that common in nuclear physics. This EFT must take into accoun
 t the macroscopic effects of the quantum conformal anomaly\, and vacuum en
 ergy as a Bose-Einstein condensate. Gravastars have a non-singular vacuum 
 condensate interior and physical surface rather than an event horizon. The
  possibility of subjecting this hypothesis to gravitational wave observati
 ons will be discussed.\n \nJoin videoconference\n\nhttps://indico.bnl.gov
 /event/33133/
LOCATION:Large Seminar Room
URL:https://indico.bnl.gov/event/33133/
END:VEVENT
END:VCALENDAR