2 papers
gr-qc2026
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…
gr-qc2025
An Exactly Soluble Group Field Theory
Luca Marchetti, Hassan Mehmood, Viqar Husain
We present a Group Field Theory (GFT) quantization of the Husain-KuchaÅ (HK) model formulated as a non-interacting GFT. We demonstrate that the path-integral formulation of this H…