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Robert McNees (mcnees@mastodon.social)'s status on Monday, 26-Aug-2024 01:04:32 UTC Robert McNees

Our long national nightmare of not enough papers by me on the arXiv is finally over (again)
https://arxiv.org/abs/2408.13203
In conversation about 3 months ago from mastodon.social permalink
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1. The symplectic potential for leaky boundaries
  
  Charges associated with gauge symmetries are defined on boundaries of spacetimes. But these constructions typically involve divergent quantities when considering asymptotic boundaries. Different prescriptions exist to address this problem, based on ambiguities in the definition of the symplectic potential. We propose a method well suited to leaky boundaries, which describe spacetimes than can exchange matter or radiation with their environment. The main advantage of this approach is that it relies only on the bulk Lagrangian and it is not tied to a specific choice of boundary conditions. The prescription is applied to four dimensional Einstein-Hilbert gravity in the partial Bondi gauge. This leads to a finite symplectic potential for unconstrained boundary data and reveals two new corner symplectic pairs associated with the relaxation of the gauge.
- Robert McNees (mcnees@mastodon.social)'s status on Monday, 26-Aug-2024 01:11:33 UTC Robert McNees
  in reply to
  
  Sent the link to my family, counted down 3... 2... 1..., and there was the reply from my dad.
  In conversation about 3 months ago permalink
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  1. The text from my dad reads "What are the odds? Mom and I were discussing that over dinner!"
    https://files.mastodon.social/media_attachments/files/113/025/658/957/497/943/original/520dc88c53fdc28c.png

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