130 citations · 1k across the 34 of their papers we have counts for
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Physical stress, mass, and energy for non-relativistic matter
Michael Geracie, Kartik Prabhu, Matthew M. Roberts
For theories of relativistic matter fields there exist two possible definitions of the stress-energy tensor, one defined by a variation of the action with the coframes at fixed con…
A Variational Principle for the Axisymmetric Stability of Rotating Relativistic Stars
Kartik Prabhu, Joshua S. Schiffrin, Robert M. Wald
It is well known that all rotating perfect fluid stars in general relativity are unstable to certain non-axisymmetric perturbations via the Chandrasekhar-Friedman-Schutz (CFS) inst…
Covariant effective action for a Galilean invariant quantum Hall system
Michael Geracie, Kartik Prabhu, Matthew M. Roberts
We construct effective field theories for gapped quantum Hall systems coupled to background geometries with local Galilean invariance i.e. Bargmann spacetimes. Along with an electr…