45 citations · 165 across the 7 of their papers we have counts for
13 papers
BMS charges in polyhomogeneous spacetimes
Mahdi Godazgar, George Long
We classify the asymptotic charges of a class of polyhomogeneous asymptotically-flat spacetimes with finite shear, generalising recent results on smooth asymptotically-flat spaceti…
Hamiltonian derivation of dual gravitational charges
Hadi Godazgar, Mahdi Godazgar, Malcolm J. Perry
We provide a Hamiltonian derivation of recently discovered dual BMS charges. In order to do so, we work in the first order formalism and add to the usual Palatini action, the Holst…
Asymptotic gravitational charges
Hadi Godazgar, Mahdi Godazgar, Malcolm J. Perry
We present a method for finding, in principle, all asymptotic gravitational charges. The basic idea is that one must consider all possible contributions to the action that do not a…
Taub-NUT from the Dirac monopole
Hadi Godazgar, Mahdi Godazgar, C. N. Pope
Writing the metric of an asymptotically flat spacetime in Bondi coordinates provides an elegant way of formulating the Einstein equation as a characteristic value problem. In this…
Dual gravitational charges and soft theorems
Hadi Godazgar, Mahdi Godazgar, C. N. Pope
We consider the consequences of the dual gravitational charges for the phase space of radiating modes, and find that they imply a new soft NUT theorem. In particular, we argue that…
New dual gravitational charges
Hadi Godazgar, Mahdi Godazgar, C. N. Pope
We show that there are a further infinite number of, previously unknown, supertranslation charges. These can be viewed as duals of the known BMS charges corresponding to supertrans…