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SUMMARY:Stability and Instability of Relativistic Fluids in Slowly Expandi
 ng Spacetimes - Max Ofner (Vienna)
DTSTART:20250303T150000Z
DTEND:20250303T160000Z
UID:TALK228517@talks.cam.ac.uk
CONTACT:Dr Greg Taujanskas
DESCRIPTION:Homogeneous and isotropic solutions to the relativistic Euler 
 equations are known to be unstable on a Minkowski background. However\, fo
 r FLRW models with a fast expansion rate\, relativistic fluids stabilize. 
 This scenario suggests a transition between stable and unstable behavior\,
  somewhere along a family of spacetimes parametrized by their expansion ra
 te. In this talk we will discuss this phase transition for various equatio
 ns of state\, focusing on the regime of linear and decelerated expansion. 
 This is based on recent analytical results\, complemented by numerical ana
 lysis.
LOCATION:MR13
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