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, 2013 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 cosmological models, their singularity resolution and the formulation of effective ...
Agullo, Ivan, Corichi, Alejandro
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Primordial black holes in loop quantum cosmology: the effect on the threshold [PDF]
Classical and quantum gravity, 2023 Primordial black holes form in the early Universe and constitute one of the most viable candidates for dark matter. The study of their formation process requires the determination of a critical energy density perturbation threshold δc , which in general ...
T. Papanikolaou
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Big bang singularity resolution in quantum cosmology [PDF]
Classical and quantum gravity, 2022 We evaluate the physical viability and logical strength of an array of putative criteria for big bang singularity resolution in quantum cosmology. Based on this analysis, we propose a mutually consistent set of constitutive conditions, which we argue ...
K. Thébault
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Quantum cosmology in f(Q) theory [PDF]
Classical and quantum gravity, 2021 We use Dirac’s method for the quantization of constrained systems in order to quantize a spatially flat Friedmann–Lemaître–Robertson–Walker spacetime in the context of f(Q) cosmology.
N. Dimakis +2 more
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Unitarity, clock dependence and quantum recollapse in quantum cosmology [PDF]
Classical and quantum gravity, 2021 We continue our analysis of a quantum cosmology model describing a flat Friedmann–Lemaître–Robertson–Walker Universe filled with a (free) massless scalar field and an arbitrary perfect fluid.
Steffen Gielen, Luc'ia Men'endez-Pidal
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Loop quantum cosmology: relation between theory and observations [PDF]
, 2023 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 including inflation, ekpyrosis and the matter bounce, with an emphasis on ...
I. Agulló +2 more
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Lorentzian quantum cosmology goes simplicial [PDF]
Classical and quantum gravity, 2021 We employ the methods of discrete (Lorentzian) Regge calculus for analysing Lorentzian quantum cosmology models with a special focus on discrete analogues of the no-boundary proposal for the early universe.
B. Dittrich, Steffen Gielen, S. Schander
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Broadening quantum cosmology with a fractional whirl [PDF]
, 2021 We start by presenting a brief summary of fractional quantum mechanics, as means to convey a motivation towards fractional quantum cosmology. Subsequently, such application is made concrete with the assistance of a case study.
S. Rasouli, S. Jalalzadeh, P. Moniz
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Topics in Supersymmetric and Noncommutative Quantum Cosmology
Universe, 2021 In the present article we review the work carried out by us and collaborators on supersymmetric quantum cosmology, noncommutative quantum cosmology and the application of GUPs to quantum cosmology and black holes.
Hugo García-Compeán +2 more
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Critical Evaluation of Common Claims in Loop Quantum Cosmology [PDF]
Universe, 2020 A large number of models have been analyzed in loop quantum cosmology, using mainly minisuperspace constructions and perturbations. At the same time, general physics principles from effective field theory and covariance have often been ignored.
M. Bojowald
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