3 citations · 5 across the 4 of their papers we have counts for
4 papers
On weak solutions in Einstein theory and beyond
Francesco Fazzini, Hassan Mehmood
In spherical symmetry, gravitational collapse of dust may give rise to the so-called shell-crossing singularities, beyond which spacetime can be extended using weak solutions to th…
Shock waves in classical dust collapse
Viqar Husain, Hassan Mehmood
During gravitational collapse of dust in spherical symmetry, matter particles may collide forming shell crossing surfaces (SCS) on which the Einstein equations become indeterminist…
An Exactly Soluble Group Field Theory
Luca Marchetti, Hassan Mehmood, Viqar Husain
We present a Group Field Theory (GFT) quantization of the Husain-Kuchař (HK) model formulated as a non-interacting GFT. We demonstrate that the path-integral formulation of this HK…
General covariance and dynamics with a Gauss law
Viqar Husain, Hassan Mehmood
We present a 4-dimensional generally covariant gauge theory which leads to the Gauss constraint but lacks both the Hamiltonian and spatial diffeomorphism constraints. The canonical…