3 papers
hep-th2024
Galilean fluids from non-relativistic gravity
Jelle Hartong, Aditya Mehra, Jørgen Musaeus
The -expansion of general relativity appropriately sourced by matter can be used to derive an action principle for Newtonian gravity. The gravitational part of this action is…
hep-th2024
Setting the connection free in the Galilei and Carroll expansions of gravity
Jørgen Musaeus, Niels A. Obers, Gerben Oling
We obtain a Palatini-type formulation for the Galilei and Carroll expansions of general relativity, where the connection is promoted to a variable. Known versions of these large an…
gr-qc2024
Towards a covariant framework for post-Newtonian expansions for radiative sources
Jelle Hartong, Jørgen Musaeus
We consider the classic problem of a compact fluid source that behaves non-relativistically and that radiates gravitational waves. The problem consists of determining the metric cl…