Results 51 to 60 of about 9,570 (308)
Comparing Quantum Gravity Models: String Theory, Loop Quantum Gravity, and Entanglement Gravity versus SU(∞)-QGR [PDF]
Symmetry, 2022 In a previous article we proposed a new model for quantum gravity (QGR) and cosmology, dubbed SU(∞)-QGR. One of the axioms of this model is that Hilbert spaces of the Universe and its subsystems represent the SU(∞) symmetry group. In this framework, the classical spacetime is interpreted as being the parameter space characterizing states of the SU ...
openaire +4 more sources
A locally finite model for gravity [PDF]
, 2008 Matter interacting classically with gravity in 3+1 dimensions usually gives rise to a continuum of degrees of freedom, so that, in any attempt to quantize the theory, ultraviolet divergences are nearly inevitable.
't Hooft, G. +3 more
core +1 more source
Progress in Group Field Theory and Related Quantum Gravity Formalisms [PDF]
, 2020 Following the fundamental insights from quantum mechanics and general relativity, geometry itself should have a quantum description; the search for a complete understanding of this description is what drives the field of quantum gravity.
core +1 more source
, 2010 The observable universe could be a 1+3-surface (the “brane”) embedded in a 1+3+d-dimensional spacetime (the “bulk”), with Standard Model particles and fields trapped on the brane while gravity is free to access the bulk.
Roy Maartens +3 more
core +1 more source
Two dimensional nearly de Sitter gravity
Journal of High Energy Physics, 2021 We study some aspects of the de Sitter version of Jackiw-Teitelboim gravity. Though we do not have propagating gravitons, we have a boundary mode when we compute observables with a fixed dilaton and metric at the boundary.
Juan Maldacena +2 more
doaj +1 more source
Discrete Gravity Models and Loop Quantum Gravity: a Short Review [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2012 v2: many amendments, matches published ...
Dupuis, Maite +2 more
openaire +5 more sources
Dilaton gravity, Poisson sigma models and loop quantum gravity [PDF]
Classical and Quantum Gravity, 2009 31 ...
Bojowald, Martin, Reyes, Juan D.
openaire +2 more sources
Statistical mechanics of graphity models [PDF]
, 2008 Graphity models are characterized by configuration spaces in which states correspond to graphs and Hamiltonians that depend on local properties of graphs such as the degrees of vertices and numbers of short cycles. As statistical systems, graphity models
Konopka, T.J. +2 more
core +1 more source
NEW SPIN FOAM MODELS OF QUANTUM GRAVITY [PDF]
Modern Physics Letters A, 2005 We give a brief and a critical review of the Barret-Crane spin foam models of quantum gravity. Then we describe two new spin foam models which are obtained by direct quantization of General Relativity and do not have some of the drawbacks of the Barret-Crane models.
openaire +3 more sources
Implications of Quantum Gravity for Dark Matter Searches with Atom Interferometers
, 2022 In this brief paper, we show that atom interferometer experiments such as MAGIS, AION and AEDGE do not only have the potential to probe very light dark matter models, but will also probe quantum gravity.
Xavier Calmet (4462561) +3 more
core +1 more source