Results 21 to 30 of about 1,577,801 (299)
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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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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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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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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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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Universe, 2023 Quantum cosmology aims to develop a quantum theory of the universe, attempting to answer open questions of physical cosmology, mainly related to the early epochs of the universe. Such a theory aims to unite relativity theory and quantum theory. Here, the
Shreya Banerjee
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Non-oscillating power spectra in loop quantum cosmology [PDF]
Classical and quantum gravity, 2020 We characterize in an analytical way the general conditions that a choice of vacuum state for the cosmological perturbations must satisfy to lead to a power spectrum with no scale-dependent oscillations over time.
B. Navascués +2 more
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From Fractional Quantum Mechanics to Quantum Cosmology: An Overture [PDF]
Mathematics, 2020 Fractional calculus is a couple of centuries old, but its development has been less embraced and it was only within the last century that a program of applications for physics started. Regarding quantum physics, it has been only in the previous decade or
P. Moniz, S. Jalalzadeh
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DECOHERENCE IN QUANTUM COSMOLOGY AND THE COSMOLOGICAL CONSTANT [PDF]
Modern Physics Letters A, 2013 We discuss a spacetime having the topology of S3×ℝ but with a different smoothness structure. The initial state of the cosmos in our model is identified with a wildly embedded 3-sphere (or a fractal space). In previous work we showed that a wild embedding is obtained by a quantization of a usual (or tame) embedding.
Asselmeyer-Maluga, T., Krol, J.
openaire +2 more sources