Results 61 to 70 of about 2,350 (164)

Synthesis, Crystal Structure, and Optoelectronic Properties of [(n‐/tert‐C4H9)S(CH3)2]PbI3

European Journal of Inorganic Chemistry, EarlyView.
Reaction of two isomers of butyldimethylsulfonium cation with PbI2 using solid‐state and solution methods yielded the corresponding organic/inorganic hybrid compounds with high humidity tolerance and 1D crystal structures of [n‐C4H9S(CH3)2]PbI3 and [tert‐C4H9S(CH3)2]PbI3.
Ioannis Koutsoumpogeras, Nikolaos Tsoureas, Nagia S. Tagiara, Ioannis Koutselas, Andreas Kaltzoglou   +4 more
wiley   +1 more source

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

Universe, 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, Killian Martineau, Flora Moulin   +2 more
doaj   +1 more source

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

Journal 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, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source

Effects of underlying topology on quantum state discrimination

European 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, Yasir Hassan Dar, Elias C. Vagenas, Salman Sajad Wani, Saif Al-Kuwari, Mir Faizal   +5 more
doaj   +1 more source

Spin Foams and Canonical Quantization

Symmetry, Integrability and Geometry: Methods and Applications, 2012
This review is devoted to the analysis of the mutual consistency of the spin foam and canonical loop quantizations in three and four spacetime dimensions.
Sergei Alexandrov, Marc Geiller, Karim Noui   +2 more
doaj   +1 more source

Noncommutative scalar fields: Quantum symmetries and braided BV quantization [PDF]

Kragujevac Journal of Science
It is strongly believed that the fully consistent quantum gravity theory should lead to a quantum spacetime. The continuous description of spacetime in terms of differential manifolds is no longer adequate at the quantum gravity energies.
Bežanić Milorad, Bogdanović Đorđe, Dimitrijević-Ćirić Marija   +2 more
doaj   +1 more source

Mind and Cosmos as Throughput Systems: A Convergence Through the Throughput Model

Systems Research and Behavioral Science, EarlyView.
ABSTRACT This paper advances a conceptual and mathematical foundations approach by applying the throughput model (TPM) to cosmic phenomena, reframing the universe as an extended information processing system. TPM's four stages, Perception, Information, Judgement and Decision Choice, are reformulated in explicit information‐theoretic and dynamical ...
Waymond Rodgers
wiley   +1 more source

A quantum reduction to spherical symmetry in loop quantum gravity

Physics Letters B, 2015
Based on a recent purely geometric construction of observables for the spatial diffeomorphism constraint, we propose two distinct quantum reductions to spherical symmetry within full 3+1-dimensional loop quantum gravity.
N. Bodendorfer, J. Lewandowski, J. Świeżewski   +2 more
doaj   +1 more source

THE FATHERS, COMPUTERS AND US

Modern Theology, EarlyView.
Abstract This essay, designed as a complement to opinions expressed by Rowan Williams and some speakers at the conference in his honour, explores features of early Christianity which suggest a positive evaluation of artificial intelligence. Noting that the fear of reducing humans to machines has been joined in the modern age by the fear that machines ...
Mark J. Edwards
wiley   +1 more source

Discrete Gravity Models and Loop Quantum Gravity: a Short Review

Symmetry, Integrability and Geometry: Methods and Applications, 2012
We review the relation between Loop Quantum Gravity on a fixed graph and discrete models of gravity. We compare Regge and twisted geometries, and discuss discrete actions based on twisted geometries and on the discretization of the Plebanski action.
Simone Speziale, James P. Ryan, Maïté Dupuis   +2 more
doaj   +1 more source