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SUMMARY:Free conformally-rescaled hyperboloidal evolution: status and appl
 ications - Alex Vañó-Viñuales (IST Lisbon)
DTSTART:20250221T130000Z
DTEND:20250221T140000Z
UID:TALK227215@talks.cam.ac.uk
CONTACT:Daniela Cors
DESCRIPTION:Gravitational wave radiation is only unambiguously defined at 
 future null infinity - the location in spacetime where light rays arrive a
 nd where global properties of spacetimes can be measured. Reaching future 
 null infinity is thus very important for extracting correct waveforms. A c
 onvenient way to include it in numerical relativity simulations is via hyp
 erboloidal foliations. I will focus on conformal compactification as metho
 d to implement free hyperboloidal evolution\, in the BSSN / conformal Z4 f
 ormulations. After illustrating its advantages\, I will report on some ong
 oing applications in spherical symmetry: an extension to include the Maxwe
 ll equations\, scattering simulations on a given background\, and wave equ
 ation(s) evolved on some FLRW-type spacetimes with time-dependent scale fa
 ctor. I will conclude giving an update on ongoing work in 3D evolutions. 
LOCATION:Potter room
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