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SUMMARY:Geoffrey Compère
DTSTART:20220314T130000Z
DTEND:20220314T134000Z
DTSTAMP:20260423T004641Z
UID:PhysBound/1
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/PhysBound/1/
 ">Tails and memories: Monsieur Théophile de Donder meets Sir Hermann Bond
 i</a>\nby Geoffrey Compère as part of Physics @ Boundaries Workshop\n\n\n
 Abstract\nThe multipolar post-Minkowskian formalism describes the external
  gravitational field outside sources such as a compact binary merger. In t
 his formalism\, the metric is expanded in harmonic gauge\, also known as d
 e Donder gauge. In radiation zone\, at length scales above the gravitation
 al wave typical wavelength\, the metric is best studied in Bondi or Newman
 -Unti gauge where an infinite set of flux-balance laws describe much physi
 cs of interest. In this talk\, I will describe how to transfer known resul
 ts from de Donder gauge to Bondi gauge\, first at linear order and then at
  quadratic order in the post-Minkowskian expansion. I will discuss the tai
 l and memory effects from this point of view\, as well the description of 
 recently defined $w(1+\\infty)$ charges in terms of canonical multipole mo
 ments.\n
LOCATION:https://researchseminars.org/talk/PhysBound/1/
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