Results 31 to 40 of about 1,262 (151)
On the Configuration Spaces of Homogeneous Loop Quantum Cosmology and Loop Quantum Gravity
, 2007 The set of homogeneous isotropic connections, as used in loop quantum cosmology, forms a line $l$ in the space of all connections $\cal A$. This embedding, however, does not continuously extend to an embedding of the configuration space $\overline l$ of homogeneous isotropic loop quantum cosmology into that of loop quantum gravity, $\overline{\cal A}$.
Brunnemann, Johannes +1 more
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The kinematical Hilbert space of loop quantum gravity from BF theories [PDF]
Classical and Quantum Gravity, 2011 In this work, it is demonstrated how the kinematical Hilbert space of Loop Quantum Gravity (LQG) can be inferred from the configuration space of BF theories via the imposition of the Hamiltonian constraints. In particular, it is outlined how the projection to the representations associated with Ashtekar-Barbero connections provides the correct ...
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Advanced Materials, EarlyView.This review systematically examines the nanomechanical mechanisms of mussel‐inspired molecular interactions, primarily investigated by direct force measurement techniques such as surface forces apparatus and atomic force microscopy. The macroscopic adhesive and self‐healing performances of mussel‐inspired functional materials, including coacervates ...
Pan Huang, Hongjian Zhang, Hongbo Zeng
wiley +1 more source
Efficient and Realistic Brain Simulation: A Review and Design Guide for Memristor‐Based Approaches
Advanced Materials Technologies, EarlyView.Memristor‐based emulation of Hodgkin‐Huxley neuron models is investigated, by defining the ideal device characteristics needed for accurate ion‐channel representation and reviewing existing works targeting memristive replication of biological realistic neural behavior.
Lennart Paul Liong Landsmeer +5 more
wiley +1 more source
LOOP QUANTUM GRAVITY INDUCED CORRECTIONS TO FERMION DYNAMICS IN FLAT SPACE [PDF]
Quantum Theory and Symmetries, 2004 6 pages, no figures, ws-procs9x6.tex, Talk presented at the Third International Symposium on Quantum Theory and Symmetries, U.
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Mimicking Symmetry‐Breaking Einstein Ring by Optical Lens
Advanced Photonics Research, EarlyView.This article uses an optical lens to emulate the gravitational lensing effect and observe the Einstein ring (ER) patterns. The symmetry‐breaking ER, i.e., Einstein cross, is observed utilizing a rotation‐symmetry‐breaking hemi‐ellipsoid lens. Deformed Einstein cross patterns induced by noncollinearly alignment of the light source–lens–observer are ...
Jun‐Liang Duan +5 more
wiley +1 more source
Loop quantum gravity and quanta of space: a primer
, 1998 11 ...
Rovelli, Carlo, Upadhya, Peush
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FLAT SPACE MODIFIED PARTICLE DYNAMICS INDUCED BY LOOP QUANTUM GRAVITY [PDF]
The Tenth Marcel Grossmann Meeting, 2006 Starting from an heuristic approach to the semiclassical limit in loop quantum gravity, the construction of effective Hamiltonians describing Planck length corrections to the propagation of photons and spin 1/2 fermions, leading to modified energy-momentum relations, is summarized.
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One-loop effective action and emergent gravity on quantum spaces in the IKKT matrix model
Journal of High Energy Physics, 2023 Abstract A detailed derivation of 3 + 1 dimensional induced or emergent gravity in the IKKT matrix model at one loop is given, as announced in [1]. The mechanism requires a brane configuration with structure $$ {\mathcal{M}}^{3,1}\times \mathcal{K}\subset {\mathbb{R}}^{9,1} $$ M
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Advanced Photonics Research, EarlyView.This work presents a systematic review of atmospheric turbulence fundamentals, including theoretical formulations and adaptive optics‐based mitigation strategies. This includes an in‐depth examination of the devices, theories, and methodologies associated with traditional correction approaches.
Qinghui Liu +5 more
wiley +1 more source