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UID:102@gravity.physik.fau.de
DTSTART;TZID=Europe/Berlin:20241120T133000
DTEND;TZID=Europe/Berlin:20241120T150000
DTSTAMP:20241104T155332Z
URL:https://www.gravity.physik.fau.de/events/tba-francesco-fazzini-univers
 ity-of-new-brunswick-canada/
SUMMARY:Shell-crossing singularities in effective LQG star collapse\, Franc
 esco Fazzini (University of New Brunswick\, Canada)
DESCRIPTION:Loop quantum gravity is mature enough to address questions rega
 rding the final state of star collapse and the fate of quantum black holes
  in quite a rigorous manner\, at least in the effective canonical approach
 .\nThe recent availability of effective EOMs allowed to study the dynamics
  beyond Oppenheimer-Snyder\, both analytically and numerically. It turned 
 out that continuous initial dust profiles with compact support develop she
 ll-crossing singularities (SCS) at most within a planckian time after the 
 bounce (both in the marginally bound and non-marginally bound case)\, maki
 ng the analysis of SCS (and the extension of the dynamics beyond them) a c
 entral topic in effective LQG star collapse.\nRecent work on star collapse
  with pressure (the first effective collapse models with realistic matter 
 fields) shows that including pressure (ideal and non-ideal fluids) doesn't
  avoid the formation of SCS after the core bounce independently from the p
 ressure magnitude\, making the SCS formation a crucial feature of effectiv
 e star collapse/black holes.\nI will discuss the SCS formation (through nu
 merical simulations and analytical results) in effective star collapse bot
 h in the dust and pressure case (in generalized LTB gauge)\, based on effe
 ctive equations that could be easily adapted to other polymerization schem
 es.
CATEGORIES:Group Seminar
LOCATION:SR 02.729\, Staudtstraße 7/B2\, Erlangen\, 91058\, Germany
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Staudtstraße 7/B2\, Erlang
 en\, 91058\, Germany;X-APPLE-RADIUS=100;X-TITLE=SR 02.729:geo:0,0
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TZID:Europe/Berlin
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DTSTART:20241027T020000
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