7 citations · 11 across the 5 of their papers we have counts for
5 papers · 1 filter
Particle production in a bouncing universe
Mustafa Saeed, Aiman Nauman, Irfan Javed
In massless scalar field cosmology, imposing the universe's physical volume as fundamentally discrete resolves the big bang singularity via a big bounce. We use quantum field theor…
Phase transitions due to Euclidean gravity
Mustafa Saeed, Diya Batool, Muhammad Muzammil +1
We use Ising-like models to probe the thermal nature of Euclidean spacetime backgrounds. We determine which properties of the background -- curvature, the presence of a horizon, or…
Quantum cosmology as a lattice in a box
Mustafa Saeed, Viqar Husain
We describe quantization schemes for scalar field cosmology in the metric variables with fundamental discreteness imposed with a lattice. The variables chosen for quantization dete…
Ising-like models on Euclidean black holes
Mustafa Saeed, Viqar Husain
We study spin models on Euclidean black hole backgrounds. These resemble the Ising model, but are inhomogeneous with two parameters, the black hole mass and the cosmological consta…
Cosmological perturbation theory with matter time
Viqar Husain, Mustafa Saeed
We study cosmological perturbation theory with scalar field and pressureless dust in the Hamiltonian formulation, with the dust field chosen as a matter-time gauge. The correspondi…