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Spherical symmetric gravitational collapse of a dust cloud: polymerized dynamics in reduced phase space
Kristina Giesel, Muxin Han, Bao-Fei Li +2
Based on the effective dynamics in the scheme of the spherical symmetry reduced model in the reduced phase space formulation of loop quantum gravity (LQG), we investigate…
Tunneling wavefunction proposal with loop quantum geometry effects
Meysam Motaharfar, Parampreet Singh
In Vilenkin's tunneling wavefunction proposal our expanding universe is born via a tunneling through a barrier from nothing at the zero scale factor. We explore the viability of th…
On a novel relationship between shear and energy density at the bounce in non-singular Bianchi-I spacetimes
A. Meenakshi McNamara, Sahil Saini, Parampreet Singh
In classical Bianchi-I spacetimes, underlying conditions for what dictates the singularity structure - whether it is anisotropic shear or energy density, can be easily determined f…
On a close relationship between the dressed metric and the hybrid approach to perturbations in effective loop quantum cosmology
Bao-Fei Li, Parampreet Singh
The dressed metric and the hybrid approach to perturbations are the two main approaches to capture the effects of quantum geometry in the primordial power spectrum in loop quantum…
Loop quantum cosmology and its gauge-covariant avatar: a weak curvature relationship
Bao-Fei Li, Parampreet Singh
We explore the relationship between the effective dynamics in standard loop quantum cosmology (LQC) based on holonomies and triads obtained from gauge-fixing fluxes, and a modifica…