Results 91 to 100 of about 173,760 (383)
Quantum singularities in a model of f(R) gravity [PDF]
The European Physical Journal C, 2012 The formation of a naked singularity in a model of f(R) gravity having as source a linear electromagnetic field is considered in view of quantum mechanics. Quantum test fields obeying the Klein-Gordon, Dirac and Maxwell equations are used to probe the classical timelike naked singularity developed at r=0.
Tahamtan, Tayabeh, Gürtuğ, Özay
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Discriminating quantum gravity models by gravitational decoherence
Nuclear Physics B, 2023 Several phenomenological approaches to quantum gravity predict the existence of a minimal measurable length and/or a maximum measurable momentum near the Planck scale. When embedded into the framework of quantum mechanics, such constraints induce a modification of the canonical commutation relations and thus a generalization of the Heisenberg ...
Al-Nasrallah, Eissa +4 more
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, 2009 Quantum gravity may involve models with stochastic fluctuations of the associated metric field, around some fixed background value. Such stochastic models of gravity may induce decoherence for matter propagating in such fluctuating space time.
Mavromatos, Nick +4 more
core +1 more source
Matrix quantization of gravitational edge modes
Journal of High Energy Physics, 2023 Gravitational subsystems with boundaries carry the action of an infinite-dimensional symmetry algebra, with potentially profound implications for the quantum theory of gravity.
William Donnelly +3 more
doaj +1 more source
A finite quantum gravity field theory model [PDF]
Classical and Quantum Gravity, 2011 Latex, 33 ...
Alfaro Solís, Jorge Luis +2 more
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A Matrix Model for Flat Space Quantum Gravity
Journal of High Energy Physics, 2023 Abstract We take a step towards the non-perturbative description of a two-dimensional dilaton-gravity theory which has a vanishing cosmological constant and contains black holes. This is done in terms of a double-scaled Hermitian random matrix model which non-perturbatively computes the partition function for the asymptotic Bondi ...
Kar, Arjun +3 more
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Advanced Functional Materials, EarlyView.In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund +6 more
wiley +1 more source
Aspects of Quantum Gravity in Cosmology [PDF]
, 2012 We review some aspects of quantum gravity in the context of cosmology. In particular, we focus on models with a phenomenology accessible to current and near-future observations, as the early Universe might be our only chance to peep through the quantum ...
Ashoorioon A. +12 more
core +2 more sources
Effective relational cosmological dynamics from quantum gravity [PDF]
Journal of High Energy Physics, 2020 We discuss the relational strategy to solve the problem of time in quantum gravity and different ways in which it could be implemented, pointing out in particular the fundamentally new dimension that the problem takes in a quantum gravity context in ...
L. Marchetti, D. Oriti
semanticscholar +1 more source
ON INHOMOGENEITY OF A STRING BIT MODEL FOR QUANTUM GRAVITY [PDF]
International Journal of Modern Physics D, 2005 We study quantum gravitational effect on a two-dimensional open universe with one particle by means of a string bit model. We find that matter is necessarily homogeneously distributed if the influence of the particle on the size of the universe is optimized.
Robert B. Mann, C.-W. H. lee
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