Modified gravity theories on a nutshell: Inflation, bounce and late-time evolution

S Nojiri, SD Odintsov, VK Oikonomou - Physics Reports, 2017 - Elsevier
We systematically review some standard issues and also the latest developments of
modified gravity in cosmology, emphasizing on inflation, bouncing cosmology and late-time …

Quantum extension of the Kruskal spacetime

A Ashtekar, J Olmedo, P Singh - Physical Review D, 2018 - APS
A new description of macroscopic Kruskal black holes that incorporates the quantum
geometry corrections of loop quantum gravity is presented. It encompasses both the …

Phenomenological implications of modified loop cosmologies: an overview

BF Li, P Singh, A Wang - Frontiers in Astronomy and Space Sciences, 2021 - frontiersin.org
In this paper, we first provide a brief review of the effective dynamics of two recently well-
studied models of modified loop quantum cosmologies (mLQCs), which arise from different …

Loop quantization of the Schwarzschild interior revisited

A Corichi, P Singh - Classical and Quantum Gravity, 2016 - iopscience.iop.org
The loop quantization of the Schwarzschild interior region, as described by a homogeneous
anisotropic Kantowski–Sachs model, is re-examined. As several studies of different …

From black holes to white holes: a quantum gravitational, symmetric bounce

J Olmedo, S Saini, P Singh - Classical and Quantum Gravity, 2017 - iopscience.iop.org
Recently, a consistent non-perturbative quantization of the Schwarzschild interior resulting
in a bounce from black hole to white hole geometry has been obtained by loop quantizing …

Loop quantum cosmology

I Agullo, A Corichi - Springer Handbook of Spacetime, 2014 - Springer
This Chapter provides an up to date, pedagogical review of some of the most relevant
advances in loop quantum cosmology. We review the quantization of homogeneous …

Spherical symmetric gravitational collapse of a dust cloud: Polymerized dynamics in reduced phase space

K Giesel, M Han, BF Li, H Liu, P Singh - Physical Review D, 2023 - APS
Based on the effective dynamics in the μ¯ scheme of the spherical symmetry reduced model
in the reduced phase space formulation of loop quantum gravity (LQG), we investigate the …

Regular black holes from loop quantum gravity

A Ashtekar, J Olmedo, P Singh - Regular Black Holes: Towards a New …, 2023 - Springer
There is rich literature on regular black holes from loop quantum gravity (LQG), where
quantum geometry effects resolve the singularity, leading to a quantum extension of the …

Loop quantum cosmology: relation between theory and observations

I Agullo, A Wang, E Wilson-Ewing - Handbook of Quantum Gravity, 2023 - Springer
This chapter provides a review of the frameworks developed for cosmological perturbation
theory in loop quantum cosmology and applications to various models of the early universe …

Nonsingular quantum gravitational dynamics of an Lemaître-Tolman-Bondi dust shell model: The role of quantization prescriptions

K Giesel, BF Li, P Singh - Physical Review D, 2021 - APS
We study some consequences of the loop quantization of the outermost dust shell in the
Lemaître-Tolman-Bondi spacetime with a homogeneous dust density using different …