Results 111 to 120 of about 85,825 (273)

Lattice Loop Quantum Gravity

open access: yes, 2009
We present a separable version of Loop Quantum Gravity (LQG) based on an inductive system of cubic lattices. We construct semi-classical states for which the LQG operators -- the flux, the area and the volume operators -- have the right classical limits.
Aastrup, Johannes, Grimstrup, Jesper M.
openaire   +2 more sources

Invariant Connections in Loop Quantum Gravity [PDF]

open access: yesCommunications in Mathematical Physics, 2016
Given a group $G$ and an abelian $C^*$-algebra $\mathfrak{A}$, the antihomomorphisms $ \colon G\rightarrow \mathrm{Aut}(\mathfrak{A})$ are in one-to-one with those left actions $ \colon G\times \mathrm{Spec}(\mathfrak{A})\rightarrow \mathrm{Spec}(\mathfrak{A})$ whose translation maps $ _g$ are continuous; whereby continuities of $ $ and $ $ turn ...
openaire   +3 more sources

Lessons from Toy-Models for the Dynamics of Loop Quantum Gravity

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2012
We review some approaches to the Hamiltonian dynamics of (loop) quantum gravity, the main issues being the regularization of the Hamiltonian and the continuum limit.
Valentin Bonzom, Alok Laddha
doaj   +1 more source

Carbon Dots: An Emerging Frontier for Green and Sustainable Civil Engineering Materials

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Traditional civil engineering materials (CE materials) are usually involved with high‐energy consumption during manufacturing, significant maintenance costs, and substantial environmental impacts throughout their life cycles. The progress of nanotechnology is catalyzing a green and sustainable transformation within the field.
Weiwen Hao   +5 more
wiley   +1 more source

Enriching Higher Affinity Aptamers by Addressing the Kinetic Aspect of the DNA Strand‐Displacement Reaction

open access: yesAngewandte Chemie, Volume 138, Issue 5, 28 January 2026.
Capture‐SELEX for ampicillin aptamers led to the dominance of a low‐affinity aptamer, while extending the target‐library incubation time significantly increased the abundance of a high‐affinity aptamer, revealing a previously unrecognized kinetic effect in the DNA strand displacement reaction during SELEX.
Yuzhe Ding   +4 more
wiley   +2 more sources

A Status Report on the Phenomenology of Black Holes in Loop Quantum Gravity: Evaporation, Tunneling to White Holes, Dark Matter and Gravitational Waves

open access: yesUniverse, 2018
The understanding of black holes in loop quantum gravity is becoming increasingly accurate. This review focuses on the possible experimental or observational consequences of the underlying spinfoam structure of space-time.
Aurélien Barrau   +2 more
doaj   +1 more source

Quantization of Reissner-Nordstr\"{o}m Black Holes and Their Non-Singular Quantum Behavior

open access: yes, 2012
Quantization of different regions of the Reissner-Nordstr\"{o}m space time (charged black hole) is done in the framework of loop quantum gravity. The geometry of Reissner-Nordstr\"{o}m space-time is expressed in terms of Ashtekar variables which form the
Heydari, Hoshang   +1 more
core   +1 more source

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos   +6 more
wiley   +1 more source

Effects of underlying topology on quantum state discrimination

open access: yesEuropean Physical Journal C: Particles and Fields
In this work, we show that quantum state discrimination can be modified due to a change in the underlying topology of a system. In particular, we explicitly demonstrate that the quantum state discrimination of systems with underlying discrete topology ...
Aatif Kaisar Khan   +5 more
doaj   +1 more source

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