Loop Quantum Gravity: A New Threat to Humeanism? Part I: The Problem of Spacetime
Sign Up to like & getrecommendations! Published in 2019 at "Foundations of Physics"
DOI: 10.1007/s10701-019-00242-6
Abstract: In this paper, I discuss whether the results of loop quantum gravity (LQG) constitute a fatal blow to Humeanism. There is at least a prima facie reason for believing so: while Humeanism regards spatiotemporal relations… read more here.
Keywords: loop quantum; new threat; gravity new; quantum gravity ... See more keywords
Primordial power spectrum from the Dapor–Liegener model of loop quantum cosmology
Sign Up to like & getrecommendations! Published in 2018 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-018-2413-1
Abstract: We compute the predictions for the power spectrum of scalar perturbations from a recent new proposal for the effective Hamiltonian of loop quantum cosmology. The model provides an attractive picture of the early cosmos, in… read more here.
Keywords: cosmology; quantum cosmology; power spectrum; loop quantum ... See more keywords
Quasinormal modes and horizon area quantisation in Loop Quantum Gravity
Sign Up to like & getrecommendations! Published in 2022 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-022-02905-8
Abstract: It is argued that the quantum of area between consecutive, high overtones quasinormal modes of a black hole horizon coincides with the area gap predicted by Loop Quantum Gravity, as long as the horizon is… read more here.
Keywords: area; loop quantum; quantum gravity; quasinormal modes ... See more keywords
Loop quantum cosmology and singularities
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DOI: 10.1038/s41598-017-06616-y
Abstract: Loop quantum gravity is believed to eliminate singularities such as the big bang and big crunch singularity. This belief is based on studies of so-called loop quantum cosmology which concerns symmetry-reduced models of quantum gravity.… read more here.
Keywords: cosmology singularities; cosmology; quantum cosmology; loop quantum ... See more keywords
SO*(2N) coherent states for loop quantum gravity
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Mathematical Physics"
DOI: 10.1063/1.4993223
Abstract: A SU(2) intertwiner with N legs can be interpreted as the quantum state of a convex polyhedron with N faces (when working in 3D). We show that the intertwiner Hilbert space carries a representation of… read more here.
Keywords: states loop; group; quantum gravity; coherent states ... See more keywords
Cosmological coherent state expectation values in loop quantum gravity I. Isotropic kinematics
Sign Up to like & getrecommendations! Published in 2018 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/aac4ba
Abstract: This is the first paper of a series dedicated to LQG coherent states and cosmology. The concept is based on the effective dynamics program of Loop Quantum Cosmology, where the classical dynamics generated by the… read more here.
Keywords: expectation values; cosmology; coherent; expectation ... See more keywords
Basis function method for numerical loop quantum cosmology: the Schwarzschild black hole interior
Sign Up to like & getrecommendations! Published in 2019 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ab514c
Abstract: Loop quantum cosmology is a symmetry-reduced application of loop quantum gravity that has led to the resolution of classical singularities such as the big bang, and those at the center of black holes. This can… read more here.
Keywords: method numerical; quantum; cosmology; quantum cosmology ... See more keywords
The time-dependent mass of cosmological perturbations in loop quantum cosmology: Dapor–Liegener regularization
Sign Up to like & getrecommendations! Published in 2020 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/abac6d
Abstract: In this work, we compute the time-dependent masses that govern the dynamics of scalar and tensor perturbations propagating on an effective flat, homogeneous, and isotropic background within the framework of loop quantum cosmology, regularized according… read more here.
Keywords: cosmology; dapor liegener; quantum cosmology; time dependent ... See more keywords
Quantum isotropy and the reduction of dynamics in Bianchi I
Sign Up to like & getrecommendations! Published in 2021 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ac337c
Abstract: The authors previously introduced a diffeomorphism-invariant definition of a homogeneous and isotropic sector of loop quantum gravity, along with a program to embed loop quantum cosmology into it. The present paper works out that program… read more here.
Keywords: quantum; cosmology; bianchi model; isotropic ... See more keywords
Dynamics of charged particles around weakly magnetized loop quantum gravity black hole
Sign Up to like & getrecommendations! Published in 2023 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/accbff
Abstract: In this article, we have studied the dynamics of electrically and magnetically charged particles in the spacetime of loop quantum gravity-corrected Schwarzschild black hole (LQGBH). We consider the loop quantum gravity (LQG) immersed in an… read more here.
Keywords: charged particles; quantum gravity; loop quantum; black hole ... See more keywords
The matter-ekpyrotic bounce scenario in Loop Quantum Cosmology
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2017/09/002
Abstract: We will perform a detailed study of the matter-ekpyrotic bouncing scenario in Loop Quantum Cosmology using the methods of the dynamical systems theory. We will show that when the background is driven by a single… read more here.
Keywords: scenario; cosmology; scenario loop; quantum cosmology ... See more keywords