Results 51 to 60 of about 165,231 (345)
Unified model of loop quantum gravity and matter [PDF]
General Relativity and Gravitation, 2006 4 pages, dedicated to Michael P.
Gambini, R., Olson, S. Jay, Pullin, J.
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Renormalizable and Unitary Model of Quantum Gravity [PDF]
Symmetry, 2019 We consider R + R 2 relativistic quantum gravity with the action where all possible terms quadratic in the curvature tensor are added to the Einstein-Hilbert term. This model was shown to be renormalizable in the work by K.S. Stelle. In this paper, we demonstrate that the R + R 2 model is also unitary contrary to the statements made
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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
Thermally Activated Delayed Fluorescence in Phase‐Separated Nanostructures
Advanced Functional Materials, EarlyView.A supramolecular, phase‐separation driven strategy yields charge transfer (CT) complexes from alternating electron‐deficient pyromellitic diimide and electron‐rich 4,5‐dibromoveratrole. The resulting CT complexes self‐assemble into lamellar nanosheets with nanometer‐sized domains that exhibit thermally activated delayed fluorescence (TADF) at room ...
Bart W.L. van den Bersselaar +8 more
wiley +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
Advanced Healthcare Materials, EarlyView.This review explores how alternative invertebrate and small‐vertebrate models advance the evaluation of nanomaterials across medicine and environmental science. By bridging cellular and organismal levels, these models enable integrated assessment of toxicity, biodistribution, and therapeutic performance.
Marie Celine Lefevre +3 more
wiley +1 more source
Topology induced first-order phase transitions in lattice quantum gravity
Journal of High Energy Physics, 2022 Causal Dynamical Triangulations (CDT) is a lattice formulation of quantum gravity, suitable for Monte-Carlo simulations which have been used to study the phase diagram of the model.
J. Ambjorn +3 more
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Quantum Gravity signatures in the Unruh effect [PDF]
, 2016 We study quantum gravity signatures emerging from phenomenologically motivated multiscale models, spectral actions, and Causal Set Theory within the detector approach to the Unruh effect.
Alkofer, Natalia +3 more
core +2 more sources
Generative Models for Crystalline Materials
Advanced Materials, EarlyView.Generative machine learning models are increasingly used in crystalline materials design. This review outlines major generative approaches and assesses their strengths and limitations. It also examines how generative models can be adapted to practical applications, discusses key experimental considerations for evaluating generated structures, and ...
Houssam Metni +15 more
wiley +1 more source
Spikes and spines in 4D Lorentzian simplicial quantum gravity
Journal of High Energy PhysicsSimplicial approaches to quantum gravity such as quantum Regge calculus and spin foams include configurations where bulk edges can become arbitrarily large while the boundary edges are kept small.
Johanna Borissova +3 more
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